CVE-2021-46966

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

sctp: use call_rcu to free endpoint

This patch is to delay the endpoint free by calling call_rcu() to fix another use-after-free issue in sctp_sock_dump():

BUG: KASAN: use-after-free in __lock_acquire+0x36d9/0x4c20 Call Trace: __lock_acquire+0x36d9/0x4c20 kernel/locking/lockdep.c:3218 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:334 [inline] __lock_sock+0x203/0x350 net/core/sock.c:2253 lock_sock_nested+0xfe/0x120 net/core/sock.c:2774 lock_sock include/net/sock.h:1492 [inline] sctp_sock_dump+0x122/0xb20 net/sctp/diag.c:324 sctp_for_each_transport+0x2b5/0x370 net/sctp/socket.c:5091 sctp_diag_dump+0x3ac/0x660 net/sctp/diag.c:527 __inet_diag_dump+0xa8/0x140 net/ipv4/inet_diag.c:1049 inet_diag_dump+0x9b/0x110 net/ipv4/inet_diag.c:1065 netlink_dump+0x606/0x1080 net/netlink/af_netlink.c:2244 __netlink_dump_start+0x59a/0x7c0 net/netlink/af_netlink.c:2352 netlink_dump_start include/linux/netlink.h:216 [inline] inet_diag_handler_cmd+0x2ce/0x3f0 net/ipv4/inet_diag.c:1170 __sock_diag_cmd net/core/sock_diag.c:232 [inline] sock_diag_rcv_msg+0x31d/0x410 net/core/sock_diag.c:263 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:274

This issue occurs when asoc is peeled off and the old sk is freed after getting it by asoc->base.sk and before calling lock_sock(sk).

To prevent the sk free, as a holder of the sk, ep should be alive when calling lock_sock(). This patch uses call_rcu() and moves sock_put and ep free into sctp_endpoint_destroy_rcu(), so that it's safe to try to hold the ep under rcu_read_lock in sctp_transport_traverse_process().

If sctp_endpoint_hold() returns true, it means this ep is still alive and we have held it and can continue to dump it; If it returns false, it means this ep is dead and can be freed after rcu_read_unlock, and we should skip it.

In sctp_sock_dump(), after locking the sk, if this ep is different from tsp->asoc->ep, it means during this dumping, this asoc was peeled off before calling lock_sock(), and the sk should be skipped; If this ep is the same with tsp->asoc->ep, it means no peeloff happens on this asoc, and due to lock_sock, no peeloff will happen either until release_sock.

Note that delaying endpoint free won't delay the port release, as the port release happens in sctp_endpoint_destroy() before calling call_rcu(). Also, freeing endpoint by call_rcu() makes it safe to access the sk by asoc->base.sk in sctp_assocs_seq_show() and sctp_rcv().

Thanks Jones to bring this issue up.

v1->v2:

• improve the changelog.
• add kfree(ep) into sctp_endpoint_destroy_rcu(), as Jakub noticed.(CVE-2021-46929)

In the Linux kernel, the following vulnerability has been resolved:

net: fix use-after-free in tw_timer_handler

A real world panic issue was found as follow in Linux 5.4.

BUG: unable to handle page fault for address: ffffde49a863de28
PGD 7e6fe62067 P4D 7e6fe62067 PUD 7e6fe63067 PMD f51e064067 PTE 0
RIP: 0010:tw_timer_handler+0x20/0x40
Call Trace:
 <IRQ>
 call_timer_fn+0x2b/0x120
 run_timer_softirq+0x1ef/0x450
 __do_softirq+0x10d/0x2b8
 irq_exit+0xc7/0xd0
 smp_apic_timer_interrupt+0x68/0x120
 apic_timer_interrupt+0xf/0x20

This issue was also reported since 2017 in the thread [1], unfortunately, the issue was still can be reproduced after fixing DCCP.

The ipv4_mib_exit_net is called before tcp_sk_exit_batch when a net namespace is destroyed since tcp_sk_ops is registered befrore ipv4_mib_ops, which means tcp_sk_ops is in the front of…

In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it. Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.

• Jammy update: v5.15.81 upstream stable release (LP: #2003130) // CVE-url: https://ubuntu.com/security/CVE-2023-1382
  • tipc: set con sock in tipc_conn_alloc
  • tipc: add an extra conn_get in tipc_conn_alloc
• CVE-url: https://ubuntu.com/security/CVE-2023-1998
  • x86/speculation: Allow enabling STIBP with legacy IBRS
• CVE-url: https://ubuntu.com/security/CVE-2021-47193
  • scsi: pm80xx: Tie the interrupt name to the module instance
  • scsi: pm80xx: Deal with kexec reboots
  • scsi: pm80xx: Increase number of supported queues
  • scsi: pm80xx: Remove DMA memory allocation for ccb and device structures
  • scsi: pm80xx: Increase the number of outstanding I/O supported to 1024
  • scsi: pm80xx: Fix memory leak during rmmod
• CVE-url: https://ubuntu.com/security/CVE-2021-47198
  • scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
  • scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
• Bionic update: upstream stable patchset 2021-12-13 (LP: #1954703) // CVE- url: https://ubuntu.com/security/CVE-2021-47194
  • cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
• CVE-url: https://ubuntu.com/security/CVE-2023-52458
  • block: add check that partition length needs to be aligned with block size
• CVE-url: https://ubuntu.com/security/CVE-2023-52600
  • jfs: fix uaf in jfs_evict_inode
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46955
  • openvswitch: fix stack OOB read while fragmenting IPv4 packets
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46966
  • ACPI: custom_method: fix potential use-after-free issue
• Bionic update: upstream stable patchset 2022-09-23 (LP: #1990698) // CVE- url: https://ubuntu.com/security/CVE-2019-25162
  • i2c: Fix a potential use after free
• CVE-url: https://ubuntu.com/security/CVE-2023-24023
  • Bluetooth: Add debug setting for changing minimum encryption key size
  • Bluetooth: Add more enc key size check
• CVE-url: https://ubuntu.com/security/CVE-2023-52603
  • UBSAN: array-index-out-of-bounds in dtSplitRoot
• Bionic update: upstream stable patchset 2021-07-14 (LP: #1936231) // CVE- url: https://ubuntu.com/security/CVE-2021-46906
  • HID: usbhid: fix info leak in hid_submit_ctrl
• Bionic update: upstream stable patchset 2021-05-25 (LP: #1929603) // CVE- url: https://ubuntu.com/security/CVE-2021-46905
  • net: hso: fix NULL-deref on disconnect regression
• Bionic update: upstream stable patchset 2021-04-30 (LP: #1926808) // CVE- url: https://ubuntu.com/security/CVE-2021-46904
  • net: hso: fix null-ptr-deref during tty device unregistration
• CVE-url: https://ubuntu.com/security/CVE-2024-26600
  • phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP

• Jammy update: v5.15.81 upstream stable release (LP: #2003130) // CVE-url: https://ubuntu.com/security/CVE-2023-1382
  • tipc: set con sock in tipc_conn_alloc
  • tipc: add an extra conn_get in tipc_conn_alloc
• CVE-url: https://ubuntu.com/security/CVE-2023-1998
  • x86/speculation: Allow enabling STIBP with legacy IBRS
• CVE-url: https://ubuntu.com/security/CVE-2021-47193
  • scsi: pm80xx: Tie the interrupt name to the module instance
  • scsi: pm80xx: Deal with kexec reboots
  • scsi: pm80xx: Increase number of supported queues
  • scsi: pm80xx: Remove DMA memory allocation for ccb and device structures
  • scsi: pm80xx: Increase the number of outstanding I/O supported to 1024
  • scsi: pm80xx: Fix memory leak during rmmod
• CVE-url: https://ubuntu.com/security/CVE-2021-47198
  • scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
  • scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
• Bionic update: upstream stable patchset 2021-12-13 (LP: #1954703) // CVE- url: https://ubuntu.com/security/CVE-2021-47194
  • cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
• CVE-url: https://ubuntu.com/security/CVE-2023-52458
  • block: add check that partition length needs to be aligned with block size
• CVE-url: https://ubuntu.com/security/CVE-2023-52600
  • jfs: fix uaf in jfs_evict_inode
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46955
  • openvswitch: fix stack OOB read while fragmenting IPv4 packets
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46966
  • ACPI: custom_method: fix potential use-after-free issue
• Bionic update: upstream stable patchset 2022-09-23 (LP: #1990698) // CVE- url: https://ubuntu.com/security/CVE-2019-25162
  • i2c: Fix a potential use after free
• CVE-url: https://ubuntu.com/security/CVE-2023-24023
  • Bluetooth: Add debug setting for changing minimum encryption key size
  • Bluetooth: Add more enc key size check
• CVE-url: https://ubuntu.com/security/CVE-2023-52603
  • UBSAN: array-index-out-of-bounds in dtSplitRoot
• Bionic update: upstream stable patchset 2021-07-14 (LP: #1936231) // CVE- url: https://ubuntu.com/security/CVE-2021-46906
  • HID: usbhid: fix info leak in hid_submit_ctrl
• Bionic update: upstream stable patchset 2021-05-25 (LP: #1929603) // CVE- url: https://ubuntu.com/security/CVE-2021-46905
  • net: hso: fix NULL-deref on disconnect regression
• Bionic update: upstream stable patchset 2021-04-30 (LP: #1926808) // CVE- url: https://ubuntu.com/security/CVE-2021-46904
  • net: hso: fix null-ptr-deref during tty device unregistration
• CVE-url: https://ubuntu.com/security/CVE-2024-26600
  • phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP

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

The following security bugs were fixed:

• CVE-2021-47078: Fixed a bug by clearing all QP fields if creation failed (bsc#1220863)
• CVE-2021-47076: Fixed a bug by returning CQE error if invalid lkey was supplied (bsc#1220860)
• CVE-2023-52605: Fixed a NULL pointer dereference check (bsc#1221039)
• CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
• CVE-2023-52502: Fixed a race condition in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() (bsc#1220831).
• CVE-2023-52569: Fixed a bug in btrfs by remoning BUG() after failure to insert delayed dir index item (bsc#1220918).
• CVE-2023-52482: Fixed a bug by adding SRSO mitigation for Hygon processors (bsc#1220735).
• CVE-2023-52597: Fixed a setting of fpc register in KVM (bsc#1221040).
• CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
• CVE-2023-52574: Fixed a bug by hiding new member header_ops (bsc#1220870).
• CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-52532: Fixed a bug in TX CQE error handling (bsc#1220932).
• CVE-2023-52530: Fixed a potential key use-after-free in wifi mac80211 (bsc#1220930).
• CVE-2023-52531: Fixed a memory corruption issue in iwlwifi (bsc#1220931).
• CVE-2021-47083: Fixed a global-out-of-bounds issue in mediatek: (bsc#1220917).
• CVE-2024-26607: Fixed a probing race issue in sii902x: (bsc#1220736).
• CVE-2024-26589: Fixed out of bounds read due to variable offset alu on PTR_TO_FLOW_KEYS (bsc#1220255).
• CVE-2021-47005: Fixed a NULL pointer dereference for ->get_features() (bsc#1220660).
• CVE-2024-26585: Fixed race between tx work scheduling and socket close (bsc#1220187).
• CVE-2023-52340: Fixed ICMPv6 “Packet Too Big” packets force a DoS of the Linux kernel by forcing 100% CPU (bsc#1219295).
• CVE-2024-0607: Fixed 64-bit load issue in nft_byteorder_eval() (bsc#1218915).
• CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed (bsc#1220742).
• CVE-2023-6817: Fixed use-after-free in nft_pipapo_walk (bsc#1218195).
• CVE-2024-26622: Fixed UAF write bug in tomoyo_write_control() (bsc#1220825).
• CVE-2023-52451: Fixed access beyond end of drmem array (bsc#1220250).
• CVE-2021-46932: Fixed missing work initialization before device registration (bsc#1220444)
• CVE-2023-52463: Fixed null pointer dereference in efivarfs (bsc#1220328).
• CVE-2021-47012: Fixed a use after free in siw_alloc_mr (bsc#1220627).
• CVE-2023-52449: Fixed gluebi NULL pointer dereference caused by ftl notifier (bsc#1220238).
• CVE-2023-52475: Fixed use-after-free in powermate_config_complete (bsc#1220649)
• CVE-2023-52478: Fixed kernel crash on receiver USB disconnect (bsc#1220796)
• CVE-2021-46989: Fixed a bug by preventing corruption in shrinking truncate in hfsplus (bsc#1220737).
• CVE-2021-46915: Fixed a bug to avoid possible divide error in nft_limit_init (bsc#1220436).
• CVE-2021-46924: Fixed fix memory leak in device probe and remove (bsc#1220459)
• CVE-2019-25162: Fixed a potential use after free (bsc#1220409).
• CVE-2020-36784: Fixed reference leak when pm_runtime_get_sync fails (bsc#1220570).
• CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure after sync'ing SRCU (bsc#1220745).
• CVE-2023-52445: Fixed use after free on context disconnection (bsc#1220241).
• CVE-2023-46343: Fixed a NULL pointer dereference in send_acknowledge() (CVE-2023-46343).
• CVE-2023-52439: Fixed use-after-free in uio_open (bsc#1220140).
• CVE-2023-52443: Fixed crash when parsed profile name is empty (bsc#1220240).
• CVE-2024-26602: Fixed overall slowdowns with sys_membarrier (bsc1220398).
• CVE-2024-26593: Fixed block process call transactions (bsc#1220009).
• CVE-2021-47013: Fixed a use after free in emac_mac_tx_buf_send (bsc#1220641).…

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

The following security bugs were fixed:

• CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
• CVE-2023-52502: Fixed a race condition in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() (bsc#1220831).
• CVE-2024-26589: Fixed out of bounds read due to variable offset alu on PTR_TO_FLOW_KEYS (bsc#1220255).
• CVE-2024-26585: Fixed race between tx work scheduling and socket close (bsc#1220187).
• CVE-2023-52340: Fixed ICMPv6 “Packet Too Big” packets force a DoS of the Linux kernel by forcing 100% CPU (bsc#1219295).
• CVE-2024-0607: Fixed 64-bit load issue in nft_byteorder_eval() (bsc#1218915).
• CVE-2023-6817: Fixed use-after-free in nft_pipapo_walk (bsc#1218195).
• CVE-2024-26622: Fixed UAF write bug in tomoyo_write_control() (bsc#1220825).
• CVE-2023-52451: Fixed access beyond end of drmem array (bsc#1220250).
• CVE-2021-46932: Fixed missing work initialization before device registration (bsc#1220444)
• CVE-2023-52463: Fixed null pointer dereference in efivarfs (bsc#1220328).
• CVE-2023-52449: Fixed gluebi NULL pointer dereference caused by ftl notifier (bsc#1220238).
• CVE-2023-52475: Fixed use-after-free in powermate_config_complete (bsc#1220649)
• CVE-2023-52478: Fixed kernel crash on receiver USB disconnect (bsc#1220796)
• CVE-2021-46915: Fixed a bug to avoid possible divide error in nft_limit_init (bsc#1220436).
• CVE-2021-46924: Fixed fix memory leak in device probe and remove (bsc#1220459)
• CVE-2019-25162: Fixed a potential use after free (bsc#1220409).
• CVE-2020-36784: Fixed reference leak when pm_runtime_get_sync fails (bsc#1220570).
• CVE-2023-52445: Fixed use after free on context disconnection (bsc#1220241).
• CVE-2023-46343: Fixed a NULL pointer dereference in send_acknowledge() (CVE-2023-46343).
• CVE-2023-52439: Fixed use-after-free in uio_open (bsc#1220140).
• CVE-2023-52443: Fixed crash when parsed profile name is empty (bsc#1220240).
• CVE-2024-26602: Fixed overall slowdowns with sys_membarrier (bsc1220398).
• CVE-2024-26593: Fixed block process call transactions (bsc#1220009).
• CVE-2021-47013: Fixed a use after free in emac_mac_tx_buf_send (bsc#1220641).
• CVE-2024-26586: Fixed stack corruption (bsc#1220243).
• CVE-2024-26595: Fixed NULL pointer dereference in error path (bsc#1220344).
• CVE-2023-52448: Fixed kernel NULL pointer dereference in gfs2_rgrp_dump (bsc#1220253).
• CVE-2024-1151: Fixed unlimited number of recursions from action sets (bsc#1219835).
• CVE-2024-23849: Fixed array-index-out-of-bounds in rds_cmsg_recv (bsc#1219127).
• CVE-2024-0340: Fixed information disclosure in vhost/vhost.c:vhost_new_msg() (bsc#1218689).
• CVE-2023-51042: Fixed use-after-free in amdgpu_cs_wait_all_fences in drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (bsc#1219128).
• CVE-2021-47078: Fixed a bug by clearing all QP fields if creation failed (bsc#1220863)
• CVE-2021-47076: Fixed a bug by returning CQE error if invalid lkey was supplied (bsc#1220860)
• CVE-2023-52605: Fixed a NULL pointer dereference check (bsc#1221039)
• CVE-2023-52569: Fixed a bug in btrfs by remoning BUG() after failure to insert delayed dir index item (bsc#1220918).
• CVE-2023-52482: Fixex a bug by adding SRSO mitigation for Hygon processors (bsc#1220735).
• CVE-2023-52597: Fixed a setting of fpc register in KVM (bsc#1221040).
• CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
• CVE-2023-52574: Fixed a bug by hiding new member header_ops (bsc#1220870).
• CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-52532: Fixed a bug in TX CQE error handling (bsc#1220932).
• CVE-2023-52530: Fixed a potential key use-after-free in wifi mac80211 (bsc#1220930).
• CVE-2023-52531: Fixed a memory corruption issue in iwlwifi (bsc#1220931).
• CVE-2021-47083: Fixed a…

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

The following security bugs were fixed:

• CVE-2021-47078: Fixed a bug by clearing all QP fields if creation failed (bsc#1220863)
• CVE-2021-47076: Fixed a bug by returning CQE error if invalid lkey was supplied (bsc#1220860)
• CVE-2023-52605: Fixed a NULL pointer dereference check (bsc#1221039)
• CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
• CVE-2023-52502: Fixed a race condition in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() (bsc#1220831).
• CVE-2023-52569: Fixed a bug in btrfs by remoning BUG() after failure to insert delayed dir index item (bsc#1220918).
• CVE-2023-52482: Fixed a bug by adding SRSO mitigation for Hygon processors (bsc#1220735).
• CVE-2023-52597: Fixed a setting of fpc register in KVM (bsc#1221040).
• CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
• CVE-2023-52574: Fixed a bug by hiding new member header_ops (bsc#1220870).
• CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-52532: Fixed a bug in TX CQE error handling (bsc#1220932).
• CVE-2023-52530: Fixed a potential key use-after-free in wifi mac80211 (bsc#1220930).
• CVE-2023-52531: Fixed a memory corruption issue in iwlwifi (bsc#1220931).
• CVE-2021-47083: Fixed a global-out-of-bounds issue in mediatek: (bsc#1220917).
• CVE-2024-26607: Fixed a probing race issue in sii902x: (bsc#1220736).
• CVE-2024-26589: Fixed out of bounds read due to variable offset alu on PTR_TO_FLOW_KEYS (bsc#1220255).
• CVE-2021-47005: Fixed a NULL pointer dereference for ->get_features() (bsc#1220660).
• CVE-2024-26585: Fixed race between tx work scheduling and socket close (bsc#1220187).
• CVE-2023-52340: Fixed ICMPv6 “Packet Too Big” packets force a DoS of the Linux kernel by forcing 100% CPU (bsc#1219295).
• CVE-2024-0607: Fixed 64-bit load issue in nft_byteorder_eval() (bsc#1218915).
• CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed (bsc#1220742).
• CVE-2024-26622: Fixed UAF write bug in tomoyo_write_control() (bsc#1220825).
• CVE-2023-52451: Fixed access beyond end of drmem array (bsc#1220250).
• CVE-2021-46932: Fixed missing work initialization before device registration (bsc#1220444)
• CVE-2023-52463: Fixed null pointer dereference in efivarfs (bsc#1220328).
• CVE-2021-47012: Fixed a use after free in siw_alloc_mr (bsc#1220627).
• CVE-2023-52449: Fixed gluebi NULL pointer dereference caused by ftl notifier (bsc#1220238).
• CVE-2023-52475: Fixed use-after-free in powermate_config_complete (bsc#1220649)
• CVE-2023-52478: Fixed kernel crash on receiver USB disconnect (bsc#1220796)
• CVE-2021-46989: Fixed a bug by preventing corruption in shrinking truncate in hfsplus (bsc#1220737).
• CVE-2021-46915: Fixed a bug to avoid possible divide error in nft_limit_init (bsc#1220436).
• CVE-2021-46924: Fixed fix memory leak in device probe and remove (bsc#1220459)
• CVE-2019-25162: Fixed a potential use after free (bsc#1220409).
• CVE-2020-36784: Fixed reference leak when pm_runtime_get_sync fails (bsc#1220570).
• CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure after sync'ing SRCU (bsc#1220745).
• CVE-2023-52445: Fixed use after free on context disconnection (bsc#1220241).
• CVE-2023-46343: Fixed a NULL pointer dereference in send_acknowledge() (CVE-2023-46343).
• CVE-2023-52439: Fixed use-after-free in uio_open (bsc#1220140).
• CVE-2023-52443: Fixed crash when parsed profile name is empty (bsc#1220240).
• CVE-2024-26602: Fixed overall slowdowns with sys_membarrier (bsc1220398).
• CVE-2024-26593: Fixed block process call transactions (bsc#1220009).
• CVE-2021-47013: Fixed a use after free in emac_mac_tx_buf_send (bsc#1220641).
• CVE-2024-26586: Fixed stack corruption (bsc#1220243).
• CVE-2024-26595:…

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

The following security bugs were fixed:

• CVE-2019-25160: Fixed out-of-bounds memory accesses in netlabel (bsc#1220394).
• CVE-2020-36312: Fixed an issue in virt/kvm/kvm_main.c that had a kvm_io_bus_unregister_dev memory leak upon a kmalloc failure (bsc#1184509).
• CVE-2021-23134: Fixed a use-after-free issue in nfc sockets (bsc#1186060).
• CVE-2021-46904: Fixed NULL pointer dereference during tty device unregistration (bsc#1220416).
• CVE-2021-46905: Fixed NULL pointer dereference on disconnect regression (bsc#1220418).
• CVE-2021-46909: Fixed a PCI interrupt mapping in ARM footbridge (bsc#1220442).
• CVE-2021-46938: Fixed a double free of blk_mq_tag_set in dev remove after table load fails in dm rq (bsc#1220554).
• CVE-2021-46939: Fixed a denial of service in trace_clock_global() in tracing (bsc#1220580).
• CVE-2021-46941: Fixed core softreset when switch mode in usb dwc3 (bsc#1220628).
• CVE-2021-46950: Fixed a data corruption bug in raid1 arrays using bitmaps in md/raid1 (bsc#1220662).
• CVE-2021-46955: Fixed an out-of-bounds read with openvswitch, when fragmenting IPv4 packets (bsc#1220513).
• CVE-2021-46958: Fixed a race between transaction aborts and fsyncs leading to use-after-free in btrfs (bsc#1220521).
• CVE-2021-46960: Fixed a warning on smb2_get_enc_key in cifs (bsc#1220528).
• CVE-2021-46963: Fixed crash in qla2xxx_mqueuecommand() (bsc#1220536).
• CVE-2021-46964: Fixed unreserved extra IRQ vectors in qla2xxx (bsc#1220538).
• CVE-2021-46966: Fixed potential use-after-free issue in cm_write() (bsc#1220572).
• CVE-2021-46981: Fixed a NULL pointer in flush_workqueue in nbd (bsc#1220611).
• CVE-2021-46988: Fixed release page in error path to avoid BUG_ON (bsc#1220706).
• CVE-2021-46990: Fixed a denial of service when toggling entry flush barrier in powerpc/64s (bsc#1220743).
• CVE-2021-46998: Fixed an use after free bug in enic_hard_start_xmit in ethernet/enic (bsc#1220625).
• CVE-2021-47006: Fixed wrong check in overflow_handler hook in ARM 9064/1 hw_breakpoint (bsc#1220751).
• CVE-2021-47015: Fixed a RX consumer index logic in the error path in bnxt_rx_pkt() in bnxt_en (bsc#1220794).
• CVE-2021-47024: Fixed possible memory leak in vsock/virtio when closing socket (bsc#1220637).
• CVE-2021-47034: Fixed a kernel memory fault for pte update on radix in powerpc/64s (bsc#1220687).
• CVE-2021-47045: Fixed a null pointer dereference in lpfc_prep_els_iocb() in scsi lpfc (bsc#1220640).
• CVE-2021-47049: Fixed an after free in __vmbus_open() in hv vmbus (bsc#1220692).
• CVE-2021-47055: Fixed missing permissions for locking and badblock ioctls in mtd (bsc#1220768).
• CVE-2021-47056: Fixed a user-memory-access error on vf2pf_lock in crypto (bsc#1220769).
• CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed (bsc#1220742).
• CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure after sync'ing SRCU (bsc#1220745).
• CVE-2021-47063: Fixed a potential use-after-free during bridge detach in drm bridge/panel (bsc#1220777).
• CVE-2021-47068: Fixed a use-after-free issue in llcp_sock_bind/connect (bsc#1220739).
• CVE-2021-47070: Fixed memory leak in error handling paths in uio_hv_generic (bsc#1220829).
• CVE-2021-47071: Fixed a memory leak in error handling paths in hv_uio_cleanup() in uio_hv_generic (bsc#1220846).
• CVE-2021-47073: Fixed oops on rmmod dell_smbios init_dell_smbios_wmi() (bsc#1220850).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47110: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221532).
• CVE-2021-47112: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221541).
• CVE-2021-47113: Abort…

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

The following security bugs were fixed:

• CVE-2019-25160: Fixed out-of-bounds memory accesses in netlabel (bsc#1220394).
• CVE-2021-46904: Fixed NULL pointer dereference during tty device unregistration (bsc#1220416).
• CVE-2021-46905: Fixed NULL pointer dereference on disconnect regression (bsc#1220418).
• CVE-2021-46909: Fixed a PCI interrupt mapping in ARM footbridge (bsc#1220442).
• CVE-2021-46938: Fixed a double free of blk_mq_tag_set in dev remove after table load fails in dm rq (bsc#1220554).
• CVE-2021-46939: Fixed a denial of service in trace_clock_global() in tracing (bsc#1220580).
• CVE-2021-46941: Fixed core softreset when switch mode in usb dwc3 (bsc#1220628).
• CVE-2021-46950: Fixed a data corruption bug in raid1 arrays using bitmaps in md/raid1 (bsc#1220662).
• CVE-2021-46958: Fixed a race between transaction aborts and fsyncs leading to use-after-free in btrfs (bsc#1220521).
• CVE-2021-46960: Fixed a warning on smb2_get_enc_key in cifs (bsc#1220528).
• CVE-2021-46963: Fixed crash in qla2xxx_mqueuecommand() (bsc#1220536).
• CVE-2021-46964: Fixed unreserved extra IRQ vectors in qla2xxx (bsc#1220538).
• CVE-2021-46966: Fixed potential use-after-free issue in cm_write() (bsc#1220572).
• CVE-2021-46981: Fixed a NULL pointer in flush_workqueue in nbd (bsc#1220611).
• CVE-2021-46988: Fixed release page in error path to avoid BUG_ON (bsc#1220706).
• CVE-2021-46990: Fixed a denial of service when toggling entry flush barrier in powerpc/64s (bsc#1220743).
• CVE-2021-46998: Fixed an use after free bug in enic_hard_start_xmit in ethernet/enic (bsc#1220625).
• CVE-2021-47006: Fixed wrong check in overflow_handler hook in ARM 9064/1 hw_breakpoint (bsc#1220751).
• CVE-2021-47015: Fixed a RX consumer index logic in the error path in bnxt_rx_pkt() in bnxt_en (bsc#1220794).
• CVE-2021-47024: Fixed possible memory leak in vsock/virtio when closing socket (bsc#1220637).
• CVE-2021-47034: Fixed a kernel memory fault for pte update on radix in powerpc/64s (bsc#1220687).
• CVE-2021-47045: Fixed a null pointer dereference in lpfc_prep_els_iocb() in scsi lpfc (bsc#1220640).
• CVE-2021-47049: Fixed an after free in __vmbus_open() in hv vmbus (bsc#1220692).
• CVE-2021-47055: Fixed missing permissions for locking and badblock ioctls in mtd (bsc#1220768).
• CVE-2021-47056: Fixed a user-memory-access error on vf2pf_lock in crypto (bsc#1220769).
• CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed (bsc#1220742).
• CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure after sync'ing SRCU (bsc#1220745).
• CVE-2021-47063: Fixed a potential use-after-free during bridge detach in drm bridge/panel (bsc#1220777).
• CVE-2021-47068: Fixed a use-after-free issue in llcp_sock_bind/connect (bsc#1220739).
• CVE-2021-47070: Fixed memory leak in error handling paths in uio_hv_generic (bsc#1220829).
• CVE-2021-47071: Fixed a memory leak in error handling paths in hv_uio_cleanup() in uio_hv_generic (bsc#1220846).
• CVE-2021-47073: Fixed oops on rmmod dell_smbios init_dell_smbios_wmi() (bsc#1220850).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47110: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221532).
• CVE-2021-47112: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221541).
• CVE-2021-47114: Fixed a data corruption by fallocate in ocfs2 (bsc#1221548).
• CVE-2021-47117: Fixed a crash in ext4_es_cache_extent as ext4_split_extent_at failed in ext4 (bsc#1221575).
• CVE-2021-47118: Fixed an use-after-free in init task's struct pid in pid (bsc#1221605).
• CVE-2021-47119: Fixed a memory leak in ext4_fill_super in ext4 (bsc#1221608). -…

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

The following security bugs were fixed:

• CVE-2019-25160: Fixed out-of-bounds memory accesses in netlabel (bsc#1220394).
• CVE-2020-36312: Fixed an issue in virt/kvm/kvm_main.c that had a kvm_io_bus_unregister_dev memory leak upon a kmalloc failure (bsc#1184509).
• CVE-2021-23134: Fixed a use-after-free issue in nfc sockets (bsc#1186060).
• CVE-2021-46904: Fixed NULL pointer dereference during tty device unregistration (bsc#1220416).
• CVE-2021-46905: Fixed NULL pointer dereference on disconnect regression (bsc#1220418).
• CVE-2021-46909: Fixed PCI interrupt mapping in ARM footbridge (bsc#1220442).
• CVE-2021-46938: Fixed double free of blk_mq_tag_set in dev remove after table load fails (bsc#1220554).
• CVE-2021-46939: Fixed possible hung in trace_clock_global() (bsc#1220580).
• CVE-2021-46941: Fixed core softreset when switch mode in usb dwc3 (bsc#1220628).
• CVE-2021-46950: Fixed possible data corruption in md/raid1 when ending a failed write request (bsc#1220662).
• CVE-2021-46958: Fixed race between transaction aborts and fsyncs that could lead to use-after-free in btrfs (bsc#1220521).
• CVE-2021-46960: Fixed wrong error code from smb2_get_enc_key() (bsc#1220528).
• CVE-2021-46963: Fixed crash in qla2xxx_mqueuecommand() (bsc#1220536).
• CVE-2021-46964: Fixed unreserved extra IRQ vectors in qla2xxx (bsc#1220538).
• CVE-2021-46966: Fixed potential use-after-free issue in cm_write() (bsc#1220572).
• CVE-2021-46981: Fixed NULL pointer in flush_workqueue (bsc#1220611).
• CVE-2021-46988: Fixed possible crash in userfaultfd due to unreleased page (bsc#1220706).
• CVE-2021-46990: Fixed crashes when toggling entry flush barrier in powerpc/64s (bsc#1220743).
• CVE-2021-46998: Fixed a use after free bug in enic_hard_start_xmit() (bsc#1220625).
• CVE-2021-47006: Fixed wrong check in overflow_handler hook in ARM 9064/1 hw_breakpoint (bsc#1220751).
• CVE-2021-47015: Fixed RX consumer index logic in the error path in bnxt_en (bsc#1220794).
• CVE-2021-47024: Fixed possible memory leak in vsock/virtio when closing socket (bsc#1220637).
• CVE-2021-47034: Fixed resolved pte update for kernel memory on radix in powerpc/64s (bsc#1220687).
• CVE-2021-47045: Fixed null pointer dereference in lpfc_prep_els_iocb() (bsc#1220640).
• CVE-2021-47049: Fixed Use after free in __vmbus_open() (bsc#1220692).
• CVE-2021-47055: Fixed missing permissions for locking and badblock ioctls in mtd (bsc#1220768).
• CVE-2021-47056: Fixed uninitialized lock in adf_vf2pf_shutdown() (bsc#1220769).
• CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed (bsc#1220742).
• CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure after sync'ing SRCU (bsc#1220745).
• CVE-2021-47063: Fixed possible use-after-free in panel_bridge_detach() (bsc#1220777).
• CVE-2021-47068: Fixed a use-after-free issue in llcp_sock_bind/connect (bsc#1220739).
• CVE-2021-47070: Fixed memory leak in error handling paths in uio_hv_generic (bsc#1220829).
• CVE-2021-47071: Fixed memory leak in error handling paths in uio_hv_generic (bsc#1220846).
• CVE-2021-47073: Fixed oops on rmmod dell_smbios init_dell_smbios_wmi() (bsc#1220850).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47110: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221532).
• CVE-2021-47112: Fixed possible memory corruption when restoring from hibernation in x86/kvm (bsc#1221541).
• CVE-2021-47114: Fixed data corruption by fallocate in ocfs2 (bsc#1221548).
• CVE-2021-47117: Fixed bug on in ext4_es_cache_extent() as ext4_split_extent_at() failed (bsc#1221575).
• CVE-2021-47118: Fixed possible use-after-free when initializing cad_pid (bsc#1221605). -…

It was discovered that a race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-20422)

Wei Chen discovered that a race condition existed in the TIPC protocol implementation in the Linux kernel, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-1382)

Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2 mitigations with prctl syscall were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2023-1998)

Daniele Antonioli discovered that the Secure Simple Pairing and Secure Connections pairing in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials. A physically proximate attacker placed between two Bluetooth devices could use this to subsequently impersonate one of the paired devices. (CVE-2023-24023)

shanzhulig discovered that the DRM subsystem in the Linux kernel contained a race condition when performing certain operation while handling driver unload, 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-2023-51043)

It was discovered that a race condition existed in the Bluetooth subsystem of 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-2023-51779)

It was discovered that the device mapper driver in the Linux kernel did not properly validate target size during certain memory allocations. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-52429, CVE-2024-23851)

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

• Architecture specifics;
• ACPI drivers;
• I2C subsystem;
• Media drivers;
• JFS file system;
• IPv4 Networking;
• Open vSwitch; (CVE-2021-46966, CVE-2021-46936, CVE-2023-52451, CVE-2019-25162, CVE-2023-52445, CVE-2023-52600, CVE-2021-46990, CVE-2021-46955, CVE-2023-52603)