CVE-2023-35788

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.

The Linux Kernel, the operating system core itself.

Security Fix(es):

A use-after-free flaw was found in r592_remove in drivers/memstick/host/r592.c in media access in the Linux Kernel. This flaw allows a local attacker to crash the system at device disconnect, possibly leading to a kernel information leak.(CVE-2023-3141)

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.(CVE-2023-3268)

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.(CVE-2023-35788)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c.(CVE-2023-35824)

The Linux Kernel, the operating system core itself.

Security Fix(es):

A use-after-free flaw was found in r592_remove in drivers/memstick/host/r592.c in media access in the Linux Kernel. This flaw allows a local attacker to crash the system at device disconnect, possibly leading to a kernel information leak.(CVE-2023-3141)

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.(CVE-2023-3268)

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.(CVE-2023-35788)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c.(CVE-2023-35824)

The Linux Kernel, the operating system core itself.

Security Fix(es):

An out-of-bounds read vulnerability was found in the SR-IPv6 implementation in the Linux kernel. Quoting ZDI security advisory [1]:

"This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the processing of seg6 attributes. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel."

[1] https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511/(CVE-2023-2860)

A known cache speculation vulnerability, known as Branch History Injection (BHI) or Spectre-BHB, becomes actual again for the new hw AmpereOne. Spectre-BHB is similar to Spectre v2, except that malicious code uses the shared branch history (stored in the CPU Branch History Buffer, or BHB) to influence mispredicted branches within the victim's hardware context. Once that occurs, speculation caused by the mispredicted branches can cause cache allocation. This issue leads to obtaining information that should not be accessible.(CVE-2023-3006)

An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process.(CVE-2023-31084)

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.(CVE-2023-3161)

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic.(CVE-2023-3212)

** DISPUTED ** An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.(CVE-2023-34256)

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.(CVE-2023-35788)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c.(CVE-2023-35823)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c.(CVE-2023-35824)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c.(CVE-2023-35828)

The Linux Kernel, the operating system core itself.

Security Fix(es):

A known cache speculation vulnerability, known as Branch History Injection (BHI) or Spectre-BHB, becomes actual again for the new hw AmpereOne. Spectre-BHB is similar to Spectre v2, except that malicious code uses the shared branch history (stored in the CPU Branch History Buffer, or BHB) to influence mispredicted branches within the victim's hardware context. Once that occurs, speculation caused by the mispredicted branches can cause cache allocation. This issue leads to obtaining information that should not be accessible.(CVE-2023-3006)

An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process.(CVE-2023-31084)

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.(CVE-2023-3161)

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic.(CVE-2023-3212)

** DISPUTED ** An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.(CVE-2023-34256)

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.(CVE-2023-35788)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c.(CVE-2023-35823)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c.(CVE-2023-35824)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c.(CVE-2023-35828)

The Linux Kernel, the operating system core itself.

Security Fix(es):

An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process.(CVE-2023-31084)

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.(CVE-2023-3161)

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic.(CVE-2023-3212)

** DISPUTED ** An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.(CVE-2023-34256)

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.(CVE-2023-35788)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c.(CVE-2023-35823)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c.(CVE-2023-35824)

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c.(CVE-2023-35828)

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

• kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)

• kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)

• kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)

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.

Bug Fix(es):

• Rocky Linux9 rt: blktests block/024 failed (BZ#2209920)

• Backport pinned timers RT specific behavior for FIFO tasks (BZ#2210071)

• kernel-rt: update RT source tree to the Rocky Linux-9.2z2 source tree (BZ#2215122)

• kernel-rt: update RT source tree to the Rocky Linux-9.2z2b source tree (BZ#2222796)

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

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

• kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

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.

Bug Fix(es):

• low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)

• Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)

• OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)

• st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)

• refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)

• avoid unnecessary page fault retires on shared memory types (BZ#2221100)

• enable conntrack clash resolution for GRE (BZ#2223542)

• ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)

• libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)

• Important iavf bug fixes July 2023 (BZ#2228161)

• i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)

• oops on cifs_mount due to null tcon (BZ#2229128)

• iptables argument "--suppl-groups" in extension "owner" does not work in Rocky Linux8 (BZ#2229715)

• Hyper-V Rocky Linux 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)

• Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)

• Rocky Linux 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)

• Rocky Linux-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)

• Intel 8.9 iavf: Driver Update (BZ#2232399)

• Hyper-V Rocky Linux-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

• Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)

• Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)

• Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

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

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

• kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

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.

Bug Fix(es):

• low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)

• Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)

• OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)

• st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)

• refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)

• avoid unnecessary page fault retires on shared memory types (BZ#2221100)

• enable conntrack clash resolution for GRE (BZ#2223542)

• ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)

• libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)

• Important iavf bug fixes July 2023 (BZ#2228161)

• i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)

• oops on cifs_mount due to null tcon (BZ#2229128)

• iptables argument "--suppl-groups" in extension "owner" does not work in Rocky Linux SIG Cloud8 (BZ#2229715)

• Hyper-V Rocky Linux SIG Cloud 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)

• Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)

• Rocky Linux SIG Cloud 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)

• Rocky Linux SIG Cloud-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)

• Intel 8.9 iavf: Driver Update (BZ#2232399)

• Hyper-V Rocky Linux SIG Cloud-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

• Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)

• Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)

• Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.

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

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
• kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)
• kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)
• kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)

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.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
• kernel: KVM: x86/mmu: race condition in direct_page_fault() (CVE-2022-45869)
• kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c (CVE-2023-0458)
• kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)

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.

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

Security Fix(es):

• kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
• kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
• kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
• kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
• kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
• kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)
• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

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.

Bug Fix(es):

• low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)
• Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)
• OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)
• st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)
• refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)
• avoid unnecessary page fault retires on shared memory types (BZ#2221100)
• enable conntrack clash resolution for GRE (BZ#2223542)
• ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)
• libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)
• Important iavf bug fixes July 2023 (BZ#2228161)
• i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)
• oops on cifs_mount due to null tcon (BZ#2229128)
• iptables argument "--suppl-groups" in extension "owner" does not work in AlmaLinux8 (BZ#2229715)
• Hyper-V AlmaLinux 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)
• Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)
• AlmaLinux 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)
• AlmaLinux-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)
• Intel 8.9 iavf: Driver Update (BZ#2232399)
• Hyper-V AlmaLinux-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

• Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)
• Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)
• Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

• netfilter: nft_set_pipapo: fix improper element removal {CVE-2023-4004}
• net: tun: fix bugs for oversize packet when napi frags enabled {CVE-2023-3812}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• net/sched: sch_qfq: account for stab overhead in qfq_enqueue {CVE-2023-3611}
• net/sched: sch_qfq: refactor parsing of netlink parameters
• ipvlan:Fix out-of-bounds caused by unclear skb->cb {CVE-2023-3090}
• media: saa7134: fix use after free bug in saa7134_finidev due to race condition {CVE-2023-35823}
• media: dm1105: Fix use after free bug in dm1105_remove due to race condition {CVE-2023-35824}
• memstick: r592: Fix UAF bug in r592_remove due to race condition {CVE-2023-3141}
• ovl: fix use after free in struct ovl_aio_req {CVE-2023-1252}
• xen/netfront: don't use gnttab_query_foreign_access() for mapped status {CVE-2022-23037}
• xen/netfront: react properly to failing gnttab_end_foreign_access_ref() {CVE-2022-23042}
• xen/netfront: don't trust the backend response data blindly
• xen/netfront: disentangle tx_skb_freelist
• xen: sync include/xen/interface/io/ring.h with Xen's newest version
• net/sched: flower: fix possible OOB write in fl_set_geneve_opt() {CVE-2023-35788}
• rds: rds_rm_zerocopy_callback() use list_first_entry() {CVE-2023-1078}
• misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os {CVE-2022-3424}
• NFSD: Cap rsize_bop result based on send buffer size {CVE-2022-43945}
• NFSD: Protect against send buffer overflow in NFSv3 READ {CVE-2022-43945}
• NFSD: Protect against send buffer overflow in NFSv2 READ {CVE-2022-43945}
• SUNRPC: Fix svcxdr_init_encode's buflen calculation {CVE-2022-43945}
• SUNRPC: Fix svcxdr_init_decode's end-of-buffer calculation {CVE-2022-43945}
• mm/mremap: hold the rmap lock in write mode when moving page table entries. {CVE-2022-39189}
• KVM: x86: do not report a vCPU as preempted outside instruction boundaries {CVE-2022-39189}
• net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf() {CVE-2023-28466}
• tee: handle lookup of shm with reference count 0 {CVE-2021-44733}

• netfilter: nft_set_pipapo: fix improper element removal {CVE-2023-4004}
• net: tun: fix bugs for oversize packet when napi frags enabled {CVE-2023-3812}
• net/sched: cls_fw: Fix improper refcount update leads to use-after-free {CVE-2023-3776}
• net/sched: sch_qfq: account for stab overhead in qfq_enqueue {CVE-2023-3611}
• net/sched: sch_qfq: refactor parsing of netlink parameters
• ipvlan:Fix out-of-bounds caused by unclear skb->cb {CVE-2023-3090}
• media: saa7134: fix use after free bug in saa7134_finidev due to race condition {CVE-2023-35823}
• media: dm1105: Fix use after free bug in dm1105_remove due to race condition {CVE-2023-35824}
• memstick: r592: Fix UAF bug in r592_remove due to race condition {CVE-2023-3141}
• ovl: fix use after free in struct ovl_aio_req {CVE-2023-1252}
• xen/netfront: don't use gnttab_query_foreign_access() for mapped status {CVE-2022-23037}
• xen/netfront: react properly to failing gnttab_end_foreign_access_ref() {CVE-2022-23042}
• xen/netfront: don't trust the backend response data blindly {CVE-2022-23042}
• xen/netfront: disentangle tx_skb_freelist {CVE-2022-23042}
• xen: sync include/xen/interface/io/ring.h with Xen's newest version {CVE-2022-23042}
• net/sched: flower: fix possible OOB write in fl_set_geneve_opt() {CVE-2023-35788}
• rds: rds_rm_zerocopy_callback() use list_first_entry() {CVE-2023-1078}
• misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os {CVE-2022-3424}
• mac80211: do not accept/forward invalid EAPOL frames {CVE-2020-26139}
• bpf: Fix 32 bit src register truncation on div/mod {CVE-2021-3600}
• NFSD: Cap rsize_bop result based on send buffer size {CVE-2022-43945}
• NFSD: Protect against send buffer overflow in NFSv3 READ {CVE-2022-43945}
• SUNRPC: Fix svcxdr_init_encode's buflen calculation {CVE-2022-43945}
• KVM: x86: do not report a vCPU as preempted outside instruction boundaries {CVE-2022-39189}
• net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf() {CVE-2023-28466}
• tee: handle lookup of shm with reference count 0 {CVE-2021-44733}

It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.(CVE-2023-3090)

Querijn Voet discovered that a race condition existed in the io_uring subsystem 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 execute arbitrary code.(CVE-2023-3389)

It was discovered that the netfilter subsystem in the Linux kernel did not properly handle some error conditions, 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-2023-3390)

Mingi Cho discovered that the netfilter subsystem in the Linux kernel did not properly validate the status of a nft chain while performing a lookup by id, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.(CVE-2023-31248)

Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges.(CVE-2023-32629)

Tanguy Dubroca discovered that the netfilter subsystem in the Linux kernel did not properly handle certain pointer data type, leading to an out-of- bounds write vulnerability. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.(CVE-2023-35001)

Hangyu Hua discovered that the Flower classifier implementation in the Linux kernel contained an out-of-bounds write vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.(CVE-2023-35788)

This kernel update is based on upstream 5.15.117 and fixes atleast the following security issues:

In the Linux kernel through 6.2.7, fs/ntfs3/inode.c has an invalid kfree because it does not validate MFT flags before replaying logs (CVE-2022-48425).

An out-of-bounds memory access flaw was found in the Linux kernel’s XFS file system in how a user restores an XFS image after failure (with a dirty log journal). This flaw allows a local user to crash or potentially escalate their privileges on the system (CVE-2023-2124).

A flaw was found in the networking subsystem of the Linux kernel within the handling of the RPL protocol. This issue results from the lack of proper handling of user-supplied data, which can lead to an assertion failure. This may allow an unauthenticated remote attacker to create a denial of service condition on the system (CVE-2023-2156).

A denial of service problem was found, due to a possible recursive locking scenario, resulting in a deadlock in table_clear in drivers/md/dm-ioctl.c in the Linux Kernel Device Mapper-Multipathing sub-component (CVE-2023-2269).

A use-after-free flaw was found in r592_remove in drivers/memstick/host/r592.c in media access in the Linux Kernel. This flaw allows a local attacker to crash the system at device disconnect, possibly leading to a kernel information leak (CVE-2023-3141).

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic (CVE-2023-3212).

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information (CVE-2023-3268).

An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process (CVE-2023-31084).

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled (CVE-2023-32233).

An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset (CVE-2023-34256).

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation (CVE-2023-35788).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c (CVE-2023-35823).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c (CVE-2023-35824).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c (CVE-2023-35828).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in rkvdec_remove in drivers/staging/media/rkvdec/rkvdec.c (CVE-2023-35829).

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

This kernel-linus update is based on upstream 5.15.117 and fixes atleast the following security issues:

In the Linux kernel through 6.2.7, fs/ntfs3/inode.c has an invalid kfree because it does not validate MFT flags before replaying logs (CVE-2022-48425).

An out-of-bounds memory access flaw was found in the Linux kernel’s XFS file system in how a user restores an XFS image after failure (with a dirty log journal). This flaw allows a local user to crash or potentially escalate their privileges on the system (CVE-2023-2124).

A flaw was found in the networking subsystem of the Linux kernel within the handling of the RPL protocol. This issue results from the lack of proper handling of user-supplied data, which can lead to an assertion failure. This may allow an unauthenticated remote attacker to create a denial of service condition on the system (CVE-2023-2156).

A denial of service problem was found, due to a possible recursive locking scenario, resulting in a deadlock in table_clear in drivers/md/dm-ioctl.c in the Linux Kernel Device Mapper-Multipathing sub-component (CVE-2023-2269).

A use-after-free flaw was found in r592_remove in drivers/memstick/host/r592.c in media access in the Linux Kernel. This flaw allows a local attacker to crash the system at device disconnect, possibly leading to a kernel information leak (CVE-2023-3141).

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic (CVE-2023-3212).

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information (CVE-2023-3268).

An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process (CVE-2023-31084).

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled (CVE-2023-32233).

An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset (CVE-2023-34256).

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation (CVE-2023-35788).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c (CVE-2023-35823).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c (CVE-2023-35824).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c (CVE-2023-35828).

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in rkvdec_remove in drivers/staging/media/rkvdec/rkvdec.c (CVE-2023-35829).

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

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

The following security bugs were fixed:

• CVE-2023-35828: Fixed a use-after-free flaw inside renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c (bsc#1212513).
• CVE-2023-35823: Fixed a use-after-free in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c (bsc#1212494).
• CVE-2023-35788: Fixed an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets in fl_set_geneve_opt in net/sched/cls_flower.c (bsc#1212504).
• CVE-2023-33288: Fixed a use-after-free in bq24190_remove in drivers/power/supply/bq24190_charger.c (bsc#1211590).
• CVE-2023-32233: Fixed a use-after-free in Netfilter nf_tables when processing batch requests (bsc#1211043).
• CVE-2023-3161: Fixed shift-out-of-bounds in fbcon_set_font() (bsc#1212154).
• CVE-2023-31436: Fixed an out-of-bounds write in qfq_change_class() because lmax can exceed QFQ_MIN_LMAX (bsc#1210940).
• CVE-2023-3141: Fixed a use-after-free flaw in r592_remove in drivers/memstick/host/r592.c, that allowed local attackers to crash the system at device disconnect (bsc#1212129).
• CVE-2023-31084: Fixed a blocking issue in drivers/media/dvb-core/dvb_frontend.c (bsc#1210783).
• CVE-2023-30456: Fixed an issue in arch/x86/kvm/vmx/nested.c with nVMX on x86_64 lacks consistency checks for CR0 and CR4 (bsc#1210294).
• CVE-2023-3006: Fixed a known cache speculation vulnerability, known as Branch History Injection (BHI) or Spectre-BHB, for the new hw AmpereOne (bsc#1211855).
• CVE-2023-28410: Fixed improper restriction of operations within the bounds of a memory buffer in some Intel(R) i915 Graphics drivers that may have allowed an authenticated user to potentially enable escalation of privilege via local access (bsc#1211263).
• CVE-2023-2513: Fixed a use-after-free vulnerability in the ext4 filesystem (bsc#1211105).
• CVE-2023-2483: Fixed a use after free bug in emac_remove due caused by a race condition (bsc#1211037).
• CVE-2023-2269: Fixed a denial-of-service problem due to a possible recursive locking scenario, resulting in a deadlock in table_clear in drivers/md/dm-ioctl.c (bsc#1210806).
• CVE-2023-2162: Fixed an use-after-free flaw in iscsi_sw_tcp_session_create (bsc#1210647).
• CVE-2023-2156: Fixed a flaw in the networking subsystem within the handling of the RPL protocol (bsc#1211131).
• CVE-2023-2124: Fixed an out-of-bound access in the XFS subsystem that could have lead to denial-of-service or potentially privilege escalation (bsc#1210498).
• CVE-2023-21102: Fixed possible bypass of shadow stack protection in __efi_rt_asm_wrapper of efi-rt-wrapper.S (bsc#1212155).
• CVE-2023-2002: Fixed a flaw that allowed an attacker to unauthorized execution of management commands, compromising the confidentiality, integrity, and availability of Bluetooth communication (bsc#1210533).
• CVE-2023-1382: Fixed denial of service in tipc_conn_close (bsc#1209288).
• CVE-2023-1380: Fixed a slab-out-of-bound read problem in brcmf_get_assoc_ies() (bsc#1209287).
• CVE-2023-1249: Fixed a use-after-free flaw inside the core dump subsystem, that could have been used to crash the system (bsc#1209039).
• CVE-2023-1079: Fixed a use-after-free problem that could have been triggered in asus_kbd_backlight_set when plugging/disconnecting a malicious USB device (bsc#1208604).
• CVE-2023-1077: Fixed a type confusion in pick_next_rt_entity(), that could cause memory corruption (bsc#1208600).
• CVE-2022-45919: Fixed a use-after-free in dvb_ca_en50221.c that could occur if there is a disconnect after an open, because of the lack of a wait_event (bsc#1205803).
• CVE-2022-45887: Fixed a memory leak in ttusb_dec.c caused by the lack of a dvb_frontend_detach call (bsc#1205762).
• CVE-2022-45886: Fixed a .disconnect versus dvb_device_open race condition in dvb_net.c that lead to a use-after-free (bsc#1205760).
• CVE-2022-45885: Fixed a race condition in dvb_frontend.c that could cause a…