CVE-2023-1206

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.

The Linux Kernel, the operating system core itself.

Security Fix(es):

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.(CVE-2023-1206)

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash.(CVE-2023-34319)

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.(CVE-2023-40283)

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.(CVE-2023-4194)

A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.(CVE-2023-4385)

A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup.(CVE-2023-4459)

The Linux Kernel, the operating system core itself.

Security Fix(es):

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.(CVE-2023-1206)

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash.(CVE-2023-34319)

An issue was discovered in the Linux kernel before 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification, leading to an out-of-bounds read.(CVE-2023-38432)

(CVE-2023-3867)

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.(CVE-2023-40283)

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.(CVE-2023-4194)

A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.(CVE-2023-4389)

The Linux Kernel, the operating system core itself.

Security Fix(es):

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.(CVE-2023-1206)

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash.(CVE-2023-34319)

An issue was discovered in the Linux kernel before 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification, leading to an out-of-bounds read.(CVE-2023-38432)

(CVE-2023-3867)

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.(CVE-2023-40283)

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.(CVE-2023-4194)

The Linux Kernel, the operating system core itself.

Security Fix(es):

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.(CVE-2023-1206)

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash.(CVE-2023-34319)

An issue was discovered in the Linux kernel before 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification, leading to an out-of-bounds read.(CVE-2023-38432)

(CVE-2023-3867)

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.(CVE-2023-40283)

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.(CVE-2023-4194)

The Linux Kernel, the operating system core itself.

Security Fix(es):

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.(CVE-2023-1206)

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash.(CVE-2023-34319)

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.(CVE-2023-40283)

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.(CVE-2023-4194)

A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.(CVE-2023-4385)

A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup.(CVE-2023-4459)

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: tun: avoid double free in tun_free_netdev (CVE-2022-4744)
• kernel: net/sched: multiple vulnerabilities (CVE-2023-3609, CVE-2023-3611, CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)
• kernel: out-of-bounds write in qfq_change_class function (CVE-2023-31436)
• kernel: out-of-bounds write in hw_atl_utils_fw_rpc_wait (CVE-2021-43975)
• kernel: Rate limit overflow messages in r8152 in intr_callback (CVE-2022-3594)
• kernel: use after free flaw in l2cap_conn_del (CVE-2022-3640)
• kernel: double free in usb_8dev_start_xmit (CVE-2022-28388)
• kernel: vmwgfx: multiple vulnerabilities (CVE-2022-38457, CVE-2022-40133, CVE-2023-33951, CVE-2023-33952)
• hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)
• kernel: Information leak in l2cap_parse_conf_req (CVE-2022-42895)
• kernel: KVM: multiple vulnerabilities (CVE-2022-45869, CVE-2023-4155, CVE-2023-30456)
• kernel: memory leak in ttusb_dec_exit_dvb (CVE-2022-45887)
• kernel: speculative pointer dereference in do_prlimit (CVE-2023-0458)
• kernel: use-after-free due to race condition in qdisc_graft (CVE-2023-0590)
• kernel: x86/mm: Randomize per-cpu entry area (CVE-2023-0597)
• kernel: HID: check empty report_list in hid_validate_values (CVE-2023-1073)
• kernel: sctp: fail if no bound addresses can be used for a given scope (CVE-2023-1074)
• kernel: hid: Use After Free in asus_remove (CVE-2023-1079)
• kernel: use-after-free in drivers/media/rc/ene_ir.c (CVE-2023-1118)
• kernel: hash collisions in the IPv6 connection lookup table (CVE-2023-1206)
• kernel: ovl: fix use after free in struct ovl_aio_req (CVE-2023-1252)
• kernel: denial of service in tipc_conn_close (CVE-2023-1382)
• kernel: Use after free bug in btsdio_remove due to race condition (CVE-2023-1989)
• kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)
• kernel: ext4: use-after-free in ext4_xattr_set_entry (CVE-2023-2513)
• kernel: fbcon: shift-out-of-bounds in fbcon_set_font (CVE-2023-3161)
• kernel: out-of-bounds access in relay_file_read (CVE-2023-3268)
• kernel: xfrm: NULL pointer dereference in xfrm_update_ae_params (CVE-2023-3772)
• kernel: smsusb: use-after-free caused by do_submit_urb (CVE-2023-4132)
• kernel: Race between task migrating pages and another task calling exit_mmap (CVE-2023-4732)
• Kernel: denial of service in atm_tc_enqueue due to type confusion (CVE-2023-23455)
• kernel: mpls: double free on sysctl allocation failure (CVE-2023-26545)
• kernel: Denial of service issue in az6027 driver (CVE-2023-28328)
• kernel: lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow (CVE-2023-28772)
• kernel: blocking operation in dvb_frontend_get_event and wait_event_interruptible (CVE-2023-31084)
• kernel: net: qcom/emac: race condition leading to use-after-free in emac_remove (CVE-2023-33203)
• kernel: saa7134: race condition leading to use-after-free in saa7134_finidev (CVE-2023-35823)
• kernel: dm1105: race condition leading to use-after-free in dm1105_remove.c (CVE-2023-35824)
• kernel: r592: race condition leading to use-after-free in r592_remove (CVE-2023-35825)
• kernel: net/tls: tls_is_tx_ready() checked list_entry (CVE-2023-1075)
• kernel: use-after-free bug in remove function xgene_hwmon_remove (CVE-2023-1855)
• kernel: Use after free bug in r592_remove (CVE-2023-3141)
• kernel: gfs2: NULL pointer dereference in gfs2_evict_inode (CVE-2023-3212)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

• CVE-url: https://ubuntu.com/security/CVE-2023-42755
  • net/sched: Retire rsvp classifier
• CVE-url: https://ubuntu.com/security/CVE-2023-39194
  • net: xfrm: Fix xfrm_address_filter OOB read
• CVE-url: https://ubuntu.com/security/CVE-2023-39192
  • netfilter: xt_u32: validate user space input
• CVE-url: https://ubuntu.com/security/CVE-2023-39193
  • netfilter: xt_sctp: validate the flag_info count
• CVE-url: https://ubuntu.com/security/CVE-2023-42754
  • ipv4: fix null-deref in ipv4_link_failure
• CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • [Config] updateconfigs for DECNET
• Jammy update: v5.15.118 upstream stable release (LP: #2030239) // CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • Remove DECnet support from kernel
• CVE-2023-1206 // CVE-url: https://ubuntu.com/security/CVE-2023-1206
  • tcp: Reduce chance of collisions in inet6_hashfn().
• Miscellaneous Ubuntu changes
  • [Config] updateconfigs for NET_CLS_RSVP

• CVE-url: https://ubuntu.com/security/CVE-2023-42755
  • net/sched: Retire rsvp classifier
• CVE-url: https://ubuntu.com/security/CVE-2023-39194
  • net: xfrm: Fix xfrm_address_filter OOB read
• CVE-url: https://ubuntu.com/security/CVE-2023-39192
  • netfilter: xt_u32: validate user space input
• CVE-url: https://ubuntu.com/security/CVE-2023-39193
  • netfilter: xt_sctp: validate the flag_info count
• CVE-url: https://ubuntu.com/security/CVE-2023-42754
  • ipv4: fix null-deref in ipv4_link_failure
• CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • [Config] updateconfigs for DECNET
• Jammy update: v5.15.118 upstream stable release (LP: #2030239) // CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • Remove DECnet support from kernel
• CVE-2023-1206 // CVE-url: https://ubuntu.com/security/CVE-2023-1206
  • tcp: Reduce chance of collisions in inet6_hashfn().
• Miscellaneous Ubuntu changes
  • [Config] updateconfigs for NET_CLS_RSVP

• CVE-url: https://ubuntu.com/security/CVE-2023-42755
  • net/sched: Retire rsvp classifier
• CVE-url: https://ubuntu.com/security/CVE-2023-39194
  • net: xfrm: Fix xfrm_address_filter OOB read
• CVE-url: https://ubuntu.com/security/CVE-2023-39192
  • netfilter: xt_u32: validate user space input
• CVE-url: https://ubuntu.com/security/CVE-2023-39193
  • netfilter: xt_sctp: validate the flag_info count
• CVE-url: https://ubuntu.com/security/CVE-2023-42754
  • ipv4: fix null-deref in ipv4_link_failure
• CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • [Config] updateconfigs for DECNET
• Jammy update: v5.15.118 upstream stable release (LP: #2030239) // CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • Remove DECnet support from kernel
• CVE-2023-1206 // CVE-url: https://ubuntu.com/security/CVE-2023-1206
  • tcp: Reduce chance of collisions in inet6_hashfn().
• CVE-url: https://ubuntu.com/security/CVE-2022-45886
  • media: dvb-core: Fix use-after-free on race condition at dvb_frontend
  • media: dvb-core: Fix use-after-free due on race condition at dvb_net
• Miscellaneous Ubuntu changes
  • [Config] updateconfigs for NET_CLS_RSVP

• CVE-url: https://ubuntu.com/security/CVE-2023-42755
  • net/sched: Retire rsvp classifier
• CVE-url: https://ubuntu.com/security/CVE-2023-39194
  • net: xfrm: Fix xfrm_address_filter OOB read
• CVE-url: https://ubuntu.com/security/CVE-2023-39192
  • netfilter: xt_u32: validate user space input
• CVE-url: https://ubuntu.com/security/CVE-2023-39193
  • netfilter: xt_sctp: validate the flag_info count
• CVE-url: https://ubuntu.com/security/CVE-2023-42754
  • ipv4: fix null-deref in ipv4_link_failure
• CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • [Config] updateconfigs for DECNET
• Jammy update: v5.15.118 upstream stable release (LP: #2030239) // CVE-url: https://ubuntu.com/security/CVE-2023-3338
  • Remove DECnet support from kernel
• CVE-2023-1206 // CVE-url: https://ubuntu.com/security/CVE-2023-1206
  • tcp: Reduce chance of collisions in inet6_hashfn().
• CVE-url: https://ubuntu.com/security/CVE-2022-45886
  • media: dvb-core: Fix use-after-free on race condition at dvb_frontend
  • media: dvb-core: Fix use-after-free due on race condition at dvb_net
• Miscellaneous Ubuntu changes
  • [Config] updateconfigs for NET_CLS_RSVP

• net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() {CVE-2024-26882}
• tls: fix use-after-free on failed backlog decryption {CVE-2024-26800}
• tls: separate no-async decryption request handling from async {CVE-2024-26584}
• tls: decrement decrypt_pending if no async completion will be called {CVE-2024-26584}
• net: tls: fix use-after-free with partial reads and async decrypt {CVE-2024-26582}
• net: tls: handle backlogging of crypto requests {CVE-2024-26584}
• net: tls: factor out tls_*crypt_async_wait()
• tap: tap_open(): correctly initialize socket uid {CVE-2023-1076}
• tun: tun_chr_open(): correctly initialize socket uid {CVE-2023-1076}
• net: add sock_init_data_uid() {CVE-2023-1076}
• netfilter: nf_tables: bail out on mismatching dynset and set expressions {CVE-2023-6622}
• drm/qxl: fix UAF on handle creation {CVE-2023-39198}
• smb: client: fix use-after-free bug in cifs_debug_data_proc_show() {CVE-2023-52752}
• USB: core: Fix deadlock in port "disable" sysfs attribute {CVE-2024-26933}
• USB: core: Add hub_get() and hub_put() routines {CVE-2024-26933}
• USB: core: Fix deadlock in usb_deauthorize_interface() {CVE-2024-26934}
• scsi: qla2xxx: Fix double free of fcport {CVE-2024-26929}
• netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() {CVE-2024-27020}
• net: ip_tunnel: prevent perpetual headroom growth {CVE-2024-26804}
• netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout {CVE-2024-26643}
• netfilter: nf_tables: disallow anonymous set with timeout flag {CVE-2024-26642}
• netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations {CVE-2024-26673}
• ipv6: sr: fix possible use-after-free and null-ptr-deref {CVE-2024-26735}
• fs: sysfs: Fix reference leak in sysfs_break_active_protection() {CVE-2024-26993}
• cifs: fix underflow in parse_server_interfaces() {CVE-2024-26828}
• mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path {CVE-2024-26595}
• mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code {CVE-2024-26595}
• mlxsw: spectrum_acl_tcam: Make fini symmetric to init {CVE-2024-26595}
• mlxsw: spectrum_acl_tcam: Add missing mutex_destroy() {CVE-2024-26595}
• net: xfrm: Fix xfrm_address_filter OOB read {CVE-2023-39194}
• exfat: check if filename entries exceeds max filename length {CVE-2023-4273}
• xfrm: add NULL check in xfrm_update_ae_params {CVE-2023-3772}
• firmware: arm_scmi: Harden accesses to the reset domains {CVE-2022-48655}
• tcp: Reduce chance of collisions in inet6_hashfn(). {CVE-2023-1206}
• ipv4: fix null-deref in ipv4_link_failure {CVE-2023-42754}
• netfilter: nfnetlink_osf: avoid OOB read {CVE-2023-39189}
• netfilter: xt_sctp: validate the flag_info count {CVE-2023-39193}
• net: qcom/emac: Fix use after free bug in emac_remove due to race condition {CVE-2023-33203}
• net/tls: tls_is_tx_ready() checked list_entry {CVE-2023-1075}
• HID: asus: use spinlock to safely schedule workers {CVE-2023-1079}
• HID: asus: use spinlock to protect concurrent accesses {CVE-2023-1079}
• HID: intel_ish-hid: Add check for ishtp_dma_tx_map {CVE-2023-3358}
• gfs2: Don't deref jdesc in evict {CVE-2023-3212}
• fbcon: Check font dimension limits {CVE-2023-3161}
• KVM: nVMX: add missing consistency checks for CR0 and CR4 {CVE-2023-30456}
• hwmon: (xgene) Fix use after free bug in xgene_hwmon_remove due to race condition {CVE-2023-1855}
• Bluetooth: HCI: Fix global-out-of-bounds {CVE-2023-28866}
• HID: check empty report_list in hid_validate_values() {CVE-2023-1073}
• net: mpls: fix stale pointer if allocation fails during device rename {CVE-2023-26545}
• r8152: Rate limit overflow messages {CVE-2022-3594}
• drm/vmwgfx: Fix shader stage validation {CVE-2022-36402}
• Bluetooth: L2CAP: Fix attempting to access uninitialized memory {CVE-2022-42895}
• dm ioctl: fix nested locking in table_clear() to remove deadlock concern {CVE-2023-2269}
• mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy() {CVE-2023-52562} -…

This kernel update is based on upstream 5.15.126 and fixes or adds mitigations for atleast the following security issues:

Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access (CVE-2022-40982, INTEL-SA-00828).

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (CVE-2023-1206).

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system (CVE-2023-4004).

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system (CVE-2023-4147).

A side channel vulnerability in some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure (CVE-2023-20569).

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash (CVE-2023-34319, XSA-432).

Security fix for AMD Zen1 information leak through Divide By Zero.

For other upstream fixes in this update, see the referenced changelogs.

This kerne-linusl update is based on upstream 5.15.126 and fixes or adds mitigations for atleast the following security issues:

Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access (CVE-2022-40982, INTEL-SA-00828).

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (CVE-2023-1206).

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system (CVE-2023-4004).

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system (CVE-2023-4147).

A side channel vulnerability in some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure (CVE-2023-20569).

A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash (CVE-2023-34319, XSA-432).

For other upstream fixes in this update, see the referenced changelogs.

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-23454: Fixed a type-confusion in the CBQ network scheduler (bsc#1207036).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-4881: Fixed an out-of-bounds write flaw in the netfilter subsystem that could lead to information disclosure or denial of service (bsc#1215221).
• CVE-2023-40283: Fixed a use-after-free issue in the Bluetooth subsystem (bsc#1214233).
• CVE-2023-1192: Fixed a use-after-free in the CIFS subsystem (bsc#1208995).

The following non-security bugs were fixed:

• check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380).
• mkspec: Allow unsupported KMPs (bsc#1214386)
• rpm/mkspec-dtb: support for nested subdirs.
• x86/srso: Do not probe microcode in a guest (git-fixes).
• x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes).
• x86/srso: Fix srso_show_state() side effect (git-fixes).
• x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
• CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalation (bsc#1215275).
• CVE-2023-0394: Fixed a NULL pointer dereference in the IPv6 stack that could lead to denial of service (bsc#1207168).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• 9p/trans_virtio: Remove sysfs file on probe failure (git-fixes).
• Drivers: hv: vmbus: Do not dereference ACPI root object handle (git-fixes).
• Input: psmouse - fix OOB access in Elantech protocol (git-fixes).
• Input: raspberrypi-ts - fix refcount leak in rpi_ts_probe (git-fixes).
• Input: xpad - add constants for GIP interface numbers (git-fixes).
• Input: xpad - delete a Razer DeathAdder mouse VID/PID entry (git-fixes).
• KVM: s390: vsie: Fix the initialization of the epoch extension (epdx) field (git-fixes bsc#1215897).
• KVM: s390: vsie: fix the length of APCB bitmap (git-fixes bsc#1215898).
• NFS/pNFS: Report EINVAL errors from connect() to the server (git-fixes).
• NFSv4/pnfs: minor fix for cleanup path in nfs4_get_device_info (git-fixes).
• README: update rebuilding information (jsc#PED-5021).
• USB: serial: option: add FOXCONN T99W368/T99W373 product (git-fixes).
• USB: serial: option: add Quectel EM05G variant (0x030e) (git-fixes).
• VSOCK: handle VIRTIO_VSOCK_OP_CREDIT_REQUEST (git-fixes).
• arm64: insn: Fix ldadd instruction encoding (git-fixes)
• arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step (git-fixes)
• blacklist.conf: workqueue: compiler warning on 32-bit systems with Clang (bsc#1215877)
• blk-mq: Add blk_mq_delay_run_hw_queues() API call (bsc#1214586).
• blk-mq: In blk_mq_dispatch_rq_list() 'no budget' is a reason to kick (bsc#1214586).
• blk-mq: Rerun dispatching in the case of budget contention (bsc#1214586).
• btrfs: output extra debug info on failure (bsc#1215136).
• config: do not incorrectly set CONFIG_BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380).
• direct-io: allow direct writes to empty inodes (bsc#1215164).
• drm/ast: Fix DRAM init on AST2200 (bsc#1152446)
• drm/client: Fix memory leak in drm_client_target_cloned (bsc#1152446).
• drm/client: Send hotplug event after registering a client (bsc#1152446).
• drm/virtio: Fix GEM handle creation UAF (git-fixes).
• drm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes (git-fixes).
• ext4: avoid deadlock in fs reclaim with page writeback (bsc#1213016).
• ext4: correct inline offset when handling xattrs in inode body (bsc#1214950).
• ext4: fix wrong unit use…

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-39194: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215861)
• CVE-2023-39193: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215860)
• CVE-2023-39192: Fixed a flaw in the u32_match_it function which could allow a local attackers to disclose sensitive information. (bsc#1215858)
• CVE-2023-42754: Fixed a null pointer dereference in ipv4_link_failure which could lead an authenticated attacker to trigger a DoS. (bsc#1215467)
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• 9p/trans_virtio: Remove sysfs file on probe failure (git-fixes).
• arm64: insn: Fix ldadd instruction encoding (git-fixes)
• arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step (git-fixes)
• blk-mq: Add blk_mq_delay_run_hw_queues() API call (bsc#1214586).
• blk-mq: In blk_mq_dispatch_rq_list() 'no budget' is a reason to kick (bsc#1214586).
• blk-mq: Rerun dispatching in the case of budget contention (bsc#1214586).
• check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380). gcc7 on SLE 15 does not support this while later gcc does.
• direct-io: allow direct writes to empty inodes (bsc#1215164).
• Drivers: hv: vmbus: Do not dereference ACPI root object handle (git-fixes).
• drm/ast: Fix DRAM init on AST2200 (bsc#1152446)
• drm/client: Fix memory leak in drm_client_target_cloned (bsc#1152446) Backporting changes: * move changes to drm_fb_helper.c * context changes
• drm/client: Send hotplug event after registering a client (bsc#1152446) Backporting changes: * send hotplug event from drm_client_add() * remove drm_dbg_kms()
• drm/virtio: Fix GEM handle creation UAF (git-fixes).
• drm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes (git-fixes).
• ext4: avoid deadlock in fs reclaim with page writeback (bsc#1213016).
• ext4: correct inline offset when handling xattrs in inode body (bsc#1214950).
• ext4: fix wrong unit use in ext4_mb_clear_bb (bsc#1214943).
• ext4: set goal start correctly in ext4_mb_normalize_request (bsc#1214940).
• fbcon: Fix null-ptr-deref in soft_cursor (bsc#1154048)
• fbdev: au1200fb: Fix missing IRQ check in au1200fb_drv_probe (bsc#1154048)
• fbdev: imxfb: warn about invalid left/right margin (bsc#1154048)
• fbdev: modedb: Add 1920x1080 at 60 Hz video mode (bsc#1154048)
• fbdev: omapfb: lcd_mipid: Fix an error handling path in (bsc#1154048)
• firmware: raspberrypi: fix possible memory leak in rpi_firmware_probe() (git-fixes).
• firmware: raspberrypi: Introduce devm_rpi_firmware_get() (git-fixes).
• firmware:…

The SUSE Linux Enterprise 12 SP5 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39192: Fixed an out of bounds read in the netfilter subsystem (bsc#1215858).
• CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• 9p/trans_virtio: Remove sysfs file on probe failure (git-fixes).
• Drivers: hv: vmbus: Do not dereference ACPI root object handle (git-fixes).
• Input: psmouse - fix OOB access in Elantech protocol (git-fixes).
• Input: raspberrypi-ts - fix refcount leak in rpi_ts_probe (git-fixes).
• Input: xpad - add constants for GIP interface numbers (git-fixes).
• Input: xpad - delete a Razer DeathAdder mouse VID/PID entry (git-fixes).
• KVM: s390: vsie: Fix the initialization of the epoch extension (epdx) field (git-fixes bsc#1215897).
• KVM: s390: vsie: fix the length of APCB bitmap (git-fixes bsc#1215898).
• NFS/pNFS: Report EINVAL errors from connect() to the server (git-fixes).
• NFSv4/pnfs: minor fix for cleanup path in nfs4_get_device_info (git-fixes).
• USB: serial: option: add FOXCONN T99W368/T99W373 product (git-fixes).
• USB: serial: option: add Quectel EM05G variant (0x030e) (git-fixes).
• VSOCK: handle VIRTIO_VSOCK_OP_CREDIT_REQUEST (git-fixes).
• arm64: insn: Fix ldadd instruction encoding (git-fixes)
• arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step (git-fixes)
• blacklist.conf: workqueue: compiler warning on 32-bit systems with Clang (bsc#1215877)
• blk-mq: Add blk_mq_delay_run_hw_queues() API call (bsc#1214586).
• blk-mq: In blk_mq_dispatch_rq_list() 'no budget' is a reason to kick (bsc#1214586).
• blk-mq: Rerun dispatching in the case of budget contention (bsc#1214586).
• btrfs: output extra information on failure (bsc#1215136).
• check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380)
• direct-io: allow direct writes to empty inodes (bsc#1215164).
• drm/ast: Fix DRAM init on AST2200 (bsc#1152446)
• drm/client: Fix memory leak in drm_client_target_cloned (bsc#1152446) Backporting changes: * move changes to drm_fb_helper.c * context changes
• drm/client: Send hotplug event after registering a client (bsc#1152446) Backporting changes: * send hotplug event from drm_client_add() * remove drm_dbg_kms()
• drm/virtio: Fix GEM handle creation UAF (git-fixes).
• drm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes (git-fixes).
• ext4: avoid deadlock in fs reclaim with page writeback (bsc#1213016).
• ext4: correct inline offset when handling xattrs in inode body (bsc#1214950).
• ext4: fix wrong unit use in…

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
• CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation. (bsc#1215899)
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages. (bsc#1214022)

The following non-security bugs were fixed:

• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• arm64: module-plts: inline linux/moduleloader.h (git-fixes)
• arm64: module: Use module_init_layout_section() to spot init sections (git-fixes)
• arm64: sdei: abort running SDEI handlers during crash (git-fixes)
• arm64: tegra: Update AHUB clock parent and rate (git-fixes)
• arm64/fpsimd: Only provide the length to cpufeature for xCR registers (git-fixes)
• ASoC: amd: yc: Fix non-functional mic on Lenovo 82QF and 82UG (git-fixes).
• ASoC: hdaudio.c: Add missing check for devm_kstrdup (git-fixes).
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: rt5640: Fix IRQ not being free-ed for HDA jack detect mode (git-fixes).
• ASoC: rt5640: Fix sleep in atomic context (git-fixes).
• ASoC: rt5640: Revert 'Fix sleep in atomic context' (git-fixes).
• ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol (git-fixes).
• ASoC: SOF: core: Only call sof_ops_free() on remove if the probe was successful (git-fixes).
• ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates (git-fixes).
• blk-iocost: fix divide by 0 error in calc_lcoefs() (bsc#1214986).
• blk-iocost: use spin_lock_irqsave in adjust_inuse_and_calc_cost (bsc#1214992).
• block/mq-deadline: use correct way to throttling write requests (bsc#1214993).
• bnx2x: new flag for track HW resource allocation (bsc#1202845 bsc#1215322).
• clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest (bsc#1206453).
• drivers: hv: Mark percpu hvcall input arg page unencrypted in SEV-SNP enlightened guest (bsc#1206453).
• Drivers: hv: vmbus: Bring the post_msg_page back for TDX VMs with the paravisor (bsc#1206453).
• Drivers: hv: vmbus: Support >64 VPs for a fully enlightened TDX/SNP VM (bsc#1206453).
• Drivers: hv: vmbus: Support fully enlightened TDX guests…

The SUSE Linux Enterprise 15 SP4 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-4563: Fixed an use-after-free flaw in the nftables sub-component. This vulnerability could allow a local attacker to crash the system or lead to a kernel information leak problem. (bsc#1214727)
• CVE-2023-39194: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215861)
• CVE-2023-39193: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215860)
• CVE-2023-39192: Fixed a flaw in the u32_match_it function which could allow a local attackers to disclose sensitive information. (bsc#1215858)
• CVE-2023-42754: Fixed a null pointer dereference in ipv4_link_failure which could lead an authenticated attacker to trigger a DoS. (bsc#1215467)
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation. (bsc#1215899)
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages. (bsc#1214022)
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-37453: Fixed oversight in SuperSpeed initialization (bsc#1213123).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs (git-fixes).
• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• ARM: pxa: remove use of symbol_get() (git-fixes).
• arm64: csum: Fix OoB access in IP checksum code for negative lengths (git-fixes).
• arm64: module-plts: inline linux/moduleloader.h (git-fixes)
• arm64: module: Use module_init_layout_section() to spot init sections (git-fixes)
• arm64: sdei: abort running SDEI handlers during crash (git-fixes)
• arm64: tegra: Update AHUB clock parent and rate (git-fixes)
• arm64/fpsimd: Only provide the length to cpufeature for xCR registers (git-fixes)
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol (git-fixes).
• ASoC: tegra: Fix…

The SUSE Linux Enterprise 15 SP5 Azure kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
• CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation (bsc#1215899).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-37453: Fixed oversight in SuperSpeed initialization (bsc#1213123).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages (bsc#1214022).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs (git-fixes).
• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• ARM: pxa: remove use of symbol_get() (git-fixes).
• ASoC: SOF: core: Only call sof_ops_free() on remove if the probe was successful (git-fixes).
• ASoC: amd: yc: Fix non-functional mic on Lenovo 82QF and 82UG (git-fixes).
• ASoC: hdaudio.c: Add missing check for devm_kstrdup (git-fixes).
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: rt5640: Fix IRQ not being free-ed for HDA jack detect mode (git-fixes).
• ASoC: rt5640: Fix sleep in atomic context (git-fixes).
• ASoC: rt5640: Revert 'Fix sleep in atomic context' (git-fixes).
• ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol (git-fixes).
• ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates (git-fixes).
• Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition (git-fixes).
• Drivers: hv: vmbus: Bring the post_msg_page back for TDX VMs with the paravisor (bsc#1206453).
• Drivers: hv: vmbus: Support >64 VPs for a fully enlightened TDX/SNP VM (bsc#1206453).
• Drivers: hv: vmbus: Support fully enlightened TDX guests (bsc#1206453).
• Drop amdgpu patch…

The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-39194: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215861)
• CVE-2023-39193: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215860)
• CVE-2023-39192: Fixed a flaw in the u32_match_it function which could allow a local attackers to disclose sensitive information. (bsc#1215858)
• CVE-2023-42754: Fixed a null pointer dereference in ipv4_link_failure which could lead an authenticated attacker to trigger a DoS. (bsc#1215467)
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation. (bsc#1215899)
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages. (bsc#1214022)
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs (git-fixes).
• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• ARM: pxa: remove use of symbol_get() (git-fixes).
• arm64: csum: Fix OoB access in IP checksum code for negative lengths (git-fixes).
• arm64: module-plts: inline linux/moduleloader.h (git-fixes)
• arm64: module: Use module_init_layout_section() to spot init sections (git-fixes)
• arm64: sdei: abort running SDEI handlers during crash (git-fixes)
• arm64: tegra: Update AHUB clock parent and rate (git-fixes)
• arm64/fpsimd: Only provide the length to cpufeature for xCR registers (git-fixes)
• arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE state to fix CPU online sequencing (bsc#1206453).
• ASoC: amd: yc: Fix non-functional mic on Lenovo 82QF and 82UG (git-fixes).
• ASoC: hdaudio.c: Add missing check for devm_kstrdup (git-fixes).
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: rt5640: Fix IRQ not being free-ed for HDA jack detect mode (git-fixes).
• ASoC: rt5640: Fix sleep in atomic context (git-fixes). -…

The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-4563: Fixed an use-after-free flaw in the nftables sub-component. This vulnerability could allow a local attacker to crash the system or lead to a kernel information leak problem. (bsc#1214727)
• CVE-2023-39194: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215861)
• CVE-2023-39193: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215860)
• CVE-2023-39192: Fixed a flaw in the u32_match_it function which could allow a local attackers to disclose sensitive information. (bsc#1215858)
• CVE-2023-42754: Fixed a null pointer dereference in ipv4_link_failure which could lead an authenticated attacker to trigger a DoS. (bsc#1215467)
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation. (bsc#1215899)
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages. (bsc#1214022)
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs (git-fixes).
• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• ARM: pxa: remove use of symbol_get() (git-fixes).
• arm64: csum: Fix OoB access in IP checksum code for negative lengths (git-fixes).
• arm64: module-plts: inline linux/moduleloader.h (git-fixes)
• arm64: module: Use module_init_layout_section() to spot init sections (git-fixes)
• arm64: sdei: abort running SDEI handlers during crash (git-fixes)
• arm64: tegra: Update AHUB clock parent and rate (git-fixes)
• arm64/fpsimd: Only provide the length to cpufeature for xCR registers (git-fixes)
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol (git-fixes).
• ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates (git-fixes).
• ata: libata: disallow…

The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-4563: Fixed an use-after-free flaw in the nftables sub-component. This vulnerability could allow a local attacker to crash the system or lead to a kernel information leak problem. (bsc#1214727)
• CVE-2023-39194: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215861)
• CVE-2023-39193: Fixed a flaw in the processing of state filters which could allow a local attackers to disclose sensitive information. (bsc#1215860)
• CVE-2023-39192: Fixed a flaw in the u32_match_it function which could allow a local attackers to disclose sensitive information. (bsc#1215858)
• CVE-2023-42754: Fixed a null pointer dereference in ipv4_link_failure which could lead an authenticated attacker to trigger a DoS. (bsc#1215467)
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation. (bsc#1215899)
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages. (bsc#1214022)
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs (git-fixes).
• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• ARM: pxa: remove use of symbol_get() (git-fixes).
• arm64: csum: Fix OoB access in IP checksum code for negative lengths (git-fixes).
• arm64: module-plts: inline linux/moduleloader.h (git-fixes)
• arm64: module: Use module_init_layout_section() to spot init sections (git-fixes)
• arm64: sdei: abort running SDEI handlers during crash (git-fixes)
• arm64: tegra: Update AHUB clock parent and rate (git-fixes)
• arm64/fpsimd: Only provide the length to cpufeature for xCR registers (git-fixes)
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol (git-fixes).
• ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates (git-fixes).
• ata: libata: disallow…

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
• CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).
• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-5345: fixed an use-after-free vulnerability in the fs/smb/client component which could be exploited to achieve local privilege escalation. (bsc#1215899)
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-4155: Fixed a flaw in KVM AMD Secure Encrypted Virtualization (SEV). An attacker can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages. (bsc#1214022)
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-4563: Fixed an use-after-free flaw in the nftables sub-component. This vulnerability could allow a local attacker to crash the system or lead to a kernel information leak problem. (bsc#1214727)
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs (git-fixes).
• ALSA: hda/realtek: Splitting the UX3402 into two separate models (git-fixes).
• ARM: pxa: remove use of symbol_get() (git-fixes).
• arm64: csum: Fix OoB access in IP checksum code for negative lengths (git-fixes).
• arm64: module-plts: inline linux/moduleloader.h (git-fixes)
• arm64: module: Use module_init_layout_section() to spot init sections (git-fixes)
• arm64: sdei: abort running SDEI handlers during crash (git-fixes)
• arm64: tegra: Update AHUB clock parent and rate (git-fixes)
• arm64/fpsimd: Only provide the length to cpufeature for xCR registers (git-fixes)
• ASoC: imx-audmix: Fix return error with devm_clk_get() (git-fixes).
• ASoC: meson: spdifin: start hw on dai probe (git-fixes).
• ASoC: soc-utils: Export snd_soc_dai_is_dummy() symbol (git-fixes).
• ASoC: tegra: Fix redundant PLLA and PLLA_OUT0 updates (git-fixes).
• ata: libata: disallow dev-initiated LPM transitions to unsupported states (git-fixes).
• ata: pata_falcon: fix IO base selection for Q40 (git-fixes).
• ata: pata_ftide010: Add missing MODULE_DESCRIPTION (git-fixes).
• ata: sata_gemini: Add missing…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges on the system. (bsc#1215150)
• CVE-2023-4389: Fixed a a double decrement of the reference count flaw in the btrfs filesystem a double decrement of the reference count, which may have allowed a local attacker with user privilege to crash the system or may lead to leaked internal kernel information. (bsc#1214351)
• CVE-2023-4921: Fixed a use-after-free vulnerability in the sch_qfq component which could be exploited to achieve local privilege escalation. (bsc#1215275)
• CVE-2023-23454: Fixed a type-confusion in the CBQ network scheduler (bsc#1207036).
• CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1213812).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the af_unix component which could be exploited to achieve local privilege escalation. (bsc#1215117)
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed an issue in drivers/media/cec/core/cec-api.c which could leaks one byte of kernel memory on specific hardware to unprivileged users. (bsc#1215299)
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs. This flaw could allow a local attacker to crash the system due to a race problem, possibly leading to a kernel information leak. (bsc#1210169)
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system or potentially cause a denial of service. (bsc#1210643)
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• bnx2x: new flag for track HW resource allocation (bsc#1202845 bsc#1215322).
• locking/rwsem: Disable reader optimistic spinning (bnc#1176588).
• mkspec: Allow unsupported KMPs (bsc#1214386)
• scsi: qedf: Add synchronization between I/O completions and abort (bsc#1210658).
• x86/pkeys: Revert a5eff7259790 ('x86/pkeys: Add PKRU value to init_fpstate') (bsc#1215356).
• x86/srso: Do not probe microcode in a guest (git-fixes).
• x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes).
• x86/srso: Fix srso_show_state() side effect (git-fixes).
• x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).

The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351).
• CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalatio (bsc#1215275).
• CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1213812).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system (bsc#1210643).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• bnx2x: new flag for track HW resource allocation (bsc#1202845 bsc#1215322).
• check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380). gcc7 on SLE 15 does not support this while later gcc does.
• locking/rwsem: Disable reader optimistic spinning (bnc#1176588).
• mkspec: Allow unsupported KMPs (bsc#1214386)
• scsi: qedf: Add synchronization between I/O completions and abort (bsc#1210658).
• x86/pkeys: Revert a5eff7259790 ('x86/pkeys: Add PKRU value to init_fpstate') (bsc#1215356).
• x86/srso: Do not probe microcode in a guest (git-fixes).
• x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes).
• x86/srso: Fix srso_show_state() side effect (git-fixes).
• x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-31085: Fixed a divide-by-zero error in do_div(sz,mtd->erasesize) that could cause a local DoS. (bsc#1210778)
• CVE-2023-45862: Fixed an issue in the ENE UB6250 reader driver whwere an object could potentially extend beyond the end of an allocation causing. (bsc#1216051)
• CVE-2023-34324: Fixed a possible deadlock in Linux kernel event handling. (bsc#1215745).
• CVE-2023-39189: Fixed a flaw in the Netfilter subsystem that could allow a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. (bsc#1216046)
• CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
• CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network scheduler which could be exploited to achieve local privilege escalation (bsc#1215275).
• CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain sockets component which could be exploited to achieve local privilege escalation (bsc#1215117).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2020-36766: Fixed a potential information leak in in the CEC driver (bsc#1215299).
• CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs which could be exploited to crash the system (bsc#1210169).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).

The following non-security bugs were fixed:

• check-for-config-changes: ignore BUILTIN_RETURN_ADDRESS_STRIPS_PAC (bsc#1214380). gcc7 on SLE 15 does not support this while later gcc does.
• mkspec: Allow unsupported KMPs (bsc#1214386)
• old-flavors: Drop 2.6 kernels. 2.6 based kernels are EOL, upgrading from them is no longer suported.

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-26555: Fixed Bluetooth legacy BR/EDR PIN code pairing in Bluetooth Core Specification 1.0B that may permit an unauthenticated nearby device to spoof the BD_ADDR of the peer device to complete pairing without knowledge of the PIN (bsc#1179610 bsc#1215237).
• CVE-2022-45887: Fixed a memory leak in ttusb_dec.c caused by the lack of a dvb_frontend_detach call (bsc#1205762).
• CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703).
• CVE-2023-31085: Fixed a divide-by-zero error in do_div(sz,mtd->erasesize) that could cause a local DoS (bsc#1210778).
• CVE-2023-3111: Fixed a use-after-free vulnerability in prepare_to_relocate in fs/btrfs/relocation.c (bsc#1212051).
• CVE-2023-39189: Fixed a flaw in the Netfilter subsystem that could allow a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure (bsc#1216046).
• CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
• CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
• CVE-2023-39197: Fixed a out-of-bounds read in nf_conntrack_dccp_packet() (bsc#1216976).
• CVE-2023-45863: Fixed a out-of-bounds write in fill_kobj_path() (bsc#1216058).
• CVE-2023-51779: Fixed a use-after-free because of a bt_sock_ioctl race condition in bt_sock_recvmsg (bsc#1218559).
• CVE-2023-6606: Fixed an out of bounds read in the SMB client when receiving a malformed length from a server (bsc#1217947).
• CVE-2023-6932: Fixed a use-after-free vulnerability in the Linux kernel's ipv4: igmp component that could lead to local privilege escalation (bsc#1218253).

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service (host system crash) or possibly execute arbitrary code. (CVE-2023-34319)

It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-40283)

It was discovered that some network classifier implementations in the Linux kernel contained use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4128)

Andy Nguyen discovered that the KVM implementation for AMD processors in the Linux kernel with Secure Encrypted Virtualization (SEV) contained a race condition when accessing the GHCB page. A local attacker in a SEV guest VM could possibly use this to cause a denial of service (host system crash). (CVE-2023-4155)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-4194)

Maxim Suhanov discovered that the exFAT file system implementation in the Linux kernel did not properly check a file name length, leading to an out- of-bounds write vulnerability. An attacker could use this to construct a malicious exFAT image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4273)

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. (CVE-2022-27672)

William Zhao discovered that the Traffic Control (TC) subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2022-4269)

Jordy Zomer and Alexandra Sandulescu discovered that syscalls invoking the do_prlimit() function in the Linux kernel did not properly handle speculative execution barriers. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-0458)

It was discovered that the TLS subsystem in the Linux kernel contained a type confusion vulnerability in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1075)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-1076, CVE-2023-4194)

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform data buffer size validation in some situations. A physically proximate attacker could use this to craft a malicious USB device that when inserted, could cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1380)

It was discovered that a race condition existed in the btrfs file system implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1611)

Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002)

Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information. (CVE-2023-20593)

It was discovered that a use-after-free vulnerability existed in the iSCSI TCP implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-2162)

Juan Jose Lopez Jaimez, Meador Inge, Simon Scannell, and Nenad Stojanovski discovered that the BPF verifier in the Linux kernel did not properly mark registers for precision tracking in certain situations, leading to an out- of-bounds access vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-2163)

It was discovered that the perf subsystem in the Linux kernel contained a use-after-free vulnerability. A privileged local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-2235)

Zheng Zhang discovered that the device-mapper implementation in the Linux kernel did not properly handle locking during table_clear() operations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-2269)

Wei Chen discovered that the DVB USB AZ6027 driver in the Linux kernel contained a null pointer dereference when handling certain messages from user space. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-28328)

It was discovered that a race…

Hyunwoo Kim discovered that the DVB Core driver in the Linux kernel contained a race condition during device removal, leading to a use-after- free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-45886, CVE-2022-45919)

Hyunwoo Kim discovered that the Technotrend/Hauppauge USB DEC driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2022-45887)

It was discovered that the NTFS file system implementation in the Linux kernel did not properly validate MFT flags in certain situations. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-48425)

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2023-20569)

It was discovered that the IPv6 RPL protocol implementation in the Linux kernel did not properly handle user-supplied data. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-2156)

Yang Lan discovered that the GFS2 file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious GFS2 image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-3212)

It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes in certain operations, leading to an integer underflow and out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38427)

Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate packet header sizes in certain situations, leading to an out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38431)

Andy Nguyen discovered that the KVM implementation for AMD processors in the Linux kernel with Secure Encrypted Virtualization (SEV) contained a race condition when accessing the GHCB page. A local attacker in a SEV guest VM could possibly use this to cause a denial of service (host system crash). (CVE-2023-4155)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-4194)

Maxim Suhanov discovered that the exFAT file system implementation in the Linux kernel did not properly check a file name length, leading to an out- of-bounds write vulnerability. An attacker could use this to construct a malicious exFAT image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4273)

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2023-20569)

It was discovered that the IPv6 RPL protocol implementation in the Linux kernel did not properly handle user-supplied data. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-2156)

Davide Ornaghi discovered that the DECnet network protocol implementation in the Linux kernel contained a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Please note that kernel support for the DECnet has been removed to resolve this CVE. (CVE-2023-3338)

Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate command payload size, leading to a out-of-bounds read vulnerability. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-38432)

It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863)

Laurence Wit discovered that the KSMBD implementation in the Linux kernel did not properly validate a buffer size in certain situations, leading to an out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-3865)

Laurence Wit discovered that the KSMBD implementation in the Linux kernel contained a null pointer dereference vulnerability when handling handling chained requests. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-3866)

It was discovered that the Siano USB MDTV receiver device driver in the Linux kernel did not properly handle device initialization failures in certain situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this cause a denial of service (system crash). (CVE-2023-4132)

Andy Nguyen discovered that the KVM implementation for AMD processors in the Linux kernel with Secure Encrypted Virtualization (SEV) contained a race condition when accessing the GHCB page. A local attacker in a SEV guest VM could possibly use this to cause a denial of service (host system crash). (CVE-2023-4155)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-4194)

Maxim Suhanov discovered that the exFAT file system implementation in the Linux kernel did not properly check a file name length, leading to an out- of-bounds write vulnerability. An attacker could use this to construct a malicious exFAT image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4273)

Thelford Williams discovered that the Ceph file system messenger protocol implementation in the Linux kernel did not properly validate frame segment length in certain situation, leading to a buffer overflow vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-44466)

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

Daniël Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2023-20569)

It was discovered that the IPv6 RPL protocol implementation in the Linux kernel did not properly handle user-supplied data. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-2156)

Davide Ornaghi discovered that the DECnet network protocol implementation in the Linux kernel contained a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Please note that kernel support for the DECnet has been removed to resolve this CVE. (CVE-2023-3338)

Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate command payload size, leading to a out-of-bounds read vulnerability. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-38432)

It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863)

Laurence Wit discovered that the KSMBD implementation in the Linux kernel did not properly validate a buffer size in certain situations, leading to an out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-3865)

Laurence Wit discovered that the KSMBD implementation in the Linux kernel contained a null pointer dereference vulnerability when handling handling chained requests. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-3866)

It was discovered that the Siano USB MDTV receiver device driver in the Linux kernel did not properly handle device initialization failures in certain situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this cause a denial of service (system crash). (CVE-2023-4132)

Andy Nguyen discovered that the KVM implementation for AMD processors in the Linux kernel with Secure Encrypted Virtualization (SEV) contained a race condition when accessing the GHCB page. A local attacker in a SEV guest VM could possibly use this to cause a denial of service (host system crash). (CVE-2023-4155)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-4194)

Maxim Suhanov discovered that the exFAT file system implementation in the Linux kernel did not properly check a file name length, leading to an out- of-bounds write vulnerability. An attacker could use this to construct a malicious exFAT image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4273)

Thelford Williams discovered that the Ceph file system messenger protocol implementation in the Linux kernel did not properly validate frame segment length in certain situation, leading to a buffer overflow vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-44466)

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2023-20569)

It was discovered that the IPv6 RPL protocol implementation in the Linux kernel did not properly handle user-supplied data. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-2156)

Davide Ornaghi discovered that the DECnet network protocol implementation in the Linux kernel contained a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Please note that kernel support for the DECnet has been removed to resolve this CVE. (CVE-2023-3338)

Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate command payload size, leading to a out-of-bounds read vulnerability. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-38432)

It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863)

Laurence Wit discovered that the KSMBD implementation in the Linux kernel did not properly validate a buffer size in certain situations, leading to an out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-3865)

Laurence Wit discovered that the KSMBD implementation in the Linux kernel contained a null pointer dereference vulnerability when handling handling chained requests. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-3866)

It was discovered that the Siano USB MDTV receiver device driver in the Linux kernel did not properly handle device initialization failures in certain situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this cause a denial of service (system crash). (CVE-2023-4132)

Andy Nguyen discovered that the KVM implementation for AMD processors in the Linux kernel with Secure Encrypted Virtualization (SEV) contained a race condition when accessing the GHCB page. A local attacker in a SEV guest VM could possibly use this to cause a denial of service (host system crash). (CVE-2023-4155)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-4194)

Maxim Suhanov discovered that the exFAT file system implementation in the Linux kernel did not properly check a file name length, leading to an out- of-bounds write vulnerability. An attacker could use this to construct a malicious exFAT image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4273)

Thelford Williams discovered that the Ceph file system messenger protocol implementation in the Linux kernel did not properly validate frame segment length in certain situation, leading to a buffer overflow vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-44466)

It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-only maps. A privileged attacker could use this to modify read-only maps. (CVE-2021-4001)

It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service (excessive CPU consumption). (CVE-2023-1206)

Yang Lan discovered that the GFS2 file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious GFS2 image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-3212)

Davide Ornaghi discovered that the DECnet network protocol implementation in the Linux kernel contained a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Please note that kernel support for the DECnet has been removed to resolve this CVE. (CVE-2023-3338)

It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863)

It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-4194)