CVE-2022-49740

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

KVM: x86: Handle SRCU initialization failure during page track init

Check the return of init_srcu_struct(), which can fail due to OOM, when initializing the page track mechanism. Lack of checking leads to a NULL pointer deref found by a modified syzkaller.

Move the call towards the beginning of kvm_arch_init_vm. - Paolo

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

NFSD: prevent underflow in nfssvc_decode_writeargs()

Smatch complains:

fs/nfsd/nfsxdr.c:341 nfssvc_decode_writeargs()
warn: no lower bound on 'args->len'

Change the type to unsigned to prevent this issue.(CVE-2022-49280)

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

tty: synclink_gt: Fix null-pointer-dereference in slgt_clean()

When the driver fails at alloc_hdlcdev(), and then we remove the driver module, we will get the following splat:

[ 25.065966] general protection fault, probably for non-canonical address 0xdffffc0000000182: 0000 [#1] PREEMPT SMP KASAN PTI [ 25.066914] KASAN: null-ptr-deref in range [0x0000000000000c10-0x0000000000000c17] [ 25.069262] RIP: 0010:detach_hdlc_protocol+0x2a/0x3e0 [ 25.077709] Call Trace: [ 25.077924] <TASK> [ 25.078108] unregister_hdlc_device+0x16/0x30 [ 25.078481] slgt_cleanup+0x157/0x9f0 [synclink_gt]

Fix this by checking whether the 'info->netdev' is a null pointer first.(CVE-2022-49307)

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

tty: goldfish: Use tty_port_destroy() to destroy port

In goldfish_tty_probe(), the port initialized through tty_port_init() should be destroyed in error paths.In goldfish_tty_remove(), qtty->port also should be destroyed or else might leak resources.

Fix the above by calling tty_port_destroy().(CVE-2022-49399)

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

media: cx25821: Fix the warning when removing the module

When removing the module, we will get the following warning:

[ 14.746697] remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'cx25821[1]' [ 14.747449] WARNING: CPU: 4 PID: 368 at fs/proc/generic.c:717 remove_proc_entry+0x389/0x3f0 [ 14.751611] RIP: 0010:remove_proc_entry+0x389/0x3f0 [ 14.759589] Call Trace: [ 14.759792] <TASK> [ 14.759975] unregister_irq_proc+0x14c/0x170 [ 14.760340] irq_free_descs+0x94/0xe0 [ 14.760640] mp_unmap_irq+0xb6/0x100 [ 14.760937] acpi_unregister_gsi_ioapic+0x27/0x40 [ 14.761334] acpi_pci_irq_disable+0x1d3/0x320 [ 14.761688] pci_disable_device+0x1ad/0x380 [ 14.762027] ? _raw_spin_unlock_irqrestore+0x2d/0x60 [ 14.762442] ? cx25821_shutdown+0x20/0x9f0 [cx25821] [ 14.762848] cx25821_finidev+0x48/0xc0 [cx25821] [ 14.763242] pci_device_remove+0x92/0x240

Fix this by freeing the irq before call pci_disable_device().(CVE-2022-49525)

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

dm raid: fix accesses beyond end of raid member array

On dm-raid table load (using raid_ctr), dm-raid allocates an array rs->devs[rs->raid_disks] for the raid device members. rs->raid_disks is defined by the number of raid metadata and image tupples passed into the target's constructor.

In the case of RAID layout changes being requested, that number can be different from the current number of members for existing raid sets as defined in their superblocks. Example RAID layout changes include:

• raid1 legs being added/removed
• raid4/5/6/10 number of stripes changed (stripe reshaping)
• takeover to higher raid level (e.g. raid5 -> raid6)

When accessing array members, rs->raid_disks must be used in control loops instead of the potentially larger value in rs->md.raid_disks. Otherwise it will cause memory access beyond the end of the rs->devs…

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads This patch fixes slab-out-of-bounds reads in brcmfmac that occur in brcmf_construct_chaninfo() and brcmf_enable_bw40_2g() when the count value of channel specifications provided by the device is greater than the length of 'list->element[]', decided by the size of the 'list' allocated with kzalloc(). The patch adds checks that make the functions free the buffer and return -EINVAL if that is the case. Note that the negative return is handled by the caller, brcmf_setup_wiphybands() or brcmf_cfg80211_attach(). Found by a modified version of syzkaller. Crash Report from brcmf_construct_chaninfo(): ================================================================== BUG: KASAN: slab-out-of-bounds in brcmf_setup_wiphybands+0x1238/0x1430 Read of size 4 at addr ffff888115f24600 by task kworker/0:2/1896 CPU: 0 PID: 1896 Comm: kworker/0:2 Tainted: G W O 5.14.0+ #132 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 Workqueue: usb_hub_wq hub_event Call Trace: dump_stack_lvl+0x57/0x7d print_address_description.constprop.0.cold+0x93/0x334 kasan_report.cold+0x83/0xdf brcmf_setup_wiphybands+0x1238/0x1430 brcmf_cfg80211_attach+0x2118/0x3fd0 brcmf_attach+0x389/0xd40 brcmf_usb_probe+0x12de/0x1690 usb_probe_interface+0x25f/0x710 really_probe+0x1be/0xa90 __driver_probe_device+0x2ab/0x460 driver_probe_device+0x49/0x120 __device_attach_driver+0x18a/0x250 bus_for_each_drv+0x123/0x1a0 __device_attach+0x207/0x330 bus_probe_device+0x1a2/0x260 device_add+0xa61/0x1ce0 usb_set_configuration+0x984/0x1770 usb_generic_driver_probe+0x69/0x90 usb_probe_device+0x9c/0x220 really_probe+0x1be/0xa90 __driver_probe_device+0x2ab/0x460 driver_probe_device+0x49/0x120 __device_attach_driver+0x18a/0x250 bus_for_each_drv+0x123/0x1a0 __device_attach+0x207/0x330 bus_probe_device+0x1a2/0x260 device_add+0xa61/0x1ce0 usb_new_device.cold+0x463/0xf66 hub_event+0x10d5/0x3330 process_one_work+0x873/0x13e0 worker_thread+0x8b/0xd10 kthread+0x379/0x450 ret_from_fork+0x1f/0x30 Allocated by task 1896: kasan_save_stack+0x1b/0x40 __kasan_kmalloc+0x7c/0x90 kmem_cache_alloc_trace+0x19e/0x330 brcmf_setup_wiphybands+0x290/0x1430 brcmf_cfg80211_attach+0x2118/0x3fd0 brcmf_attach+0x389/0xd40 brcmf_usb_probe+0x12de/0x1690 usb_probe_interface+0x25f/0x710 really_probe+0x1be/0xa90 __driver_probe_device+0x2ab/0x460 driver_probe_device+0x49/0x120 __device_attach_driver+0x18a/0x250 bus_for_each_drv+0x123/0x1a0 __device_attach+0x207/0x330 bus_probe_device+0x1a2/0x260 device_add+0xa61/0x1ce0 usb_set_configuration+0x984/0x1770 usb_generic_driver_probe+0x69/0x90 usb_probe_device+0x9c/0x220 really_probe+0x1be/0xa90 __driver_probe_device+0x2ab/0x460 driver_probe_device+0x49/0x120 __device_attach_driver+0x18a/0x250 bus_for_each_drv+0x123/0x1a0 __device_attach+0x207/0x330 bus_probe_device+0x1a2/0x260 device_add+0xa61/0x1ce0 usb_new_device.cold+0x463/0xf66 hub_event+0x10d5/0x3330 process_one_work+0x873/0x13e0 worker_thread+0x8b/0xd10 kthread+0x379/0x450 ret_from_fork+0x1f/0x30 The buggy address belongs to the object at ffff888115f24000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1536 bytes inside of 2048-byte region [ffff888115f24000, ffff888115f24800) Memory state around the buggy address: ffff888115f24500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888115f24580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888115f24600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888115f24680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888115f24700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== Crash Report from brcmf_enable_bw40_2g(): ========== ---truncated---

• Bionic update: upstream stable patchset 2022-04-13 (LP: #1968932) // CVE- url: https://ubuntu.com/security/CVE-2022-23041
  • xen/gnttab: fix gnttab_end_foreign_access() without page specified
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-49850
  • nilfs2: fix deadlock in nilfs_count_free_blocks()
• CVE-url: https://ubuntu.com/security/CVE-2024-42305
  • ext4: check dot and dotdot of dx_root before making dir indexed
• CVE-url: https://ubuntu.com/security/CVE-2024-53168
  • sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
• CVE-url: https://ubuntu.com/security/CVE-2024-26915
  • drm/amdgpu: Add check to prevent IH overflow
  • drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
• CVE-url: https://ubuntu.com/security/CVE-2024-56770
  • net/sched: netem: account for backlog updates from child qdisc
  • netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
• Bionic update: upstream stable patchset 2022-01-14 (LP: #1957957) // CVE- url: https://ubuntu.com/security/CVE-2021-47587
  • net: systemport: Add global locking for descriptor lifecycle
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46959
  • spi: Fix use-after-free with devm_spi_alloc_*
• CVE-url: https://ubuntu.com/security/CVE-2024-26689
  • ceph: prevent use-after-free in encode_cap_msg()
• CVE-url: https://ubuntu.com/security/CVE-2024-53066
  • nfs: Fix KMSAN warning in decode_getfattr_attrs()
• CVE-url: https://ubuntu.com/security/CVE-2024-49944
  • sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
• CVE-url: https://ubuntu.com/security/CVE-2024-50237
  • wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
• CVE-url: https://ubuntu.com/security/CVE-2024-46780
  • nilfs2: protect references to superblock parameters exposed in sysfs
• CVE-url: https://ubuntu.com/security/CVE-2024-53063
  • media: dvbdev: prevent the risk of out of memory access
  • media: dvbdev: fix the logic when DVB_DYNAMIC_MINORS is not set
• CVE-url: https://ubuntu.com/security/CVE-2021-47150
  • net: fec: fix the potential memory leak in fec_enet_init()
• CVE-url: https://ubuntu.com/security/CVE-2024-53140
  • netlink: terminate outstanding dump on socket close
• CVE-url: https://ubuntu.com/security/CVE-2025-21971
  • net_sched: Prevent creation of classes with TC_H_ROOT
• CVE-url: https://ubuntu.com/security/CVE-2023-52572
  • cifs: Fix UAF in cifs_demultiplex_thread()
• CVE-url: https://ubuntu.com/security/CVE-2025-37785
  • ext4: fix OOB read when checking dotdot dir
• Bionic update: upstream stable patchset 2021-07-14 (LP: #1936231) // CVE- url: https://ubuntu.com/security/CVE-2021-47277
  • kvm: avoid speculation-based attacks from out-of-range memslot accesses
• CVE-url: https://ubuntu.com/security/CVE-2022-49740
  • wifi: brcmfmac: Check the count value of channel spec to prevent out-of- bounds reads
• Bionic update: upstream stable patchset 2022-07-25 (LP: #1982782) // CVE- url: https://ubuntu.com/security/CVE-2022-49404
  • RDMA/hfi1: Fix potential integer multiplication overflow errors
• Bionic update: upstream stable patchset 2023-03-03 (LP: #2009237) // CVE- url: https://ubuntu.com/security/CVE-2022-49757
  • EDAC/highbank: Fix memory leak in highbank_mc_probe()
• Bionic update: upstream stable patchset 2022-07-25 (LP: #1982782) // CVE- url: https://ubuntu.com/security/CVE-2022-49395
  • um: Fix out-of-bounds read in LDT setup
• CVE-url: https://ubuntu.com/security/CVE-2022-49738
  • f2fs: fix to do sanity check on summary info
  • f2fs: should put a page when checking the summary info
  • f2fs: fix to do sanity check on i_extra_isize in is_alive()
• CVE-url:…

• CVE-url: https://ubuntu.com/security/CVE-2021-47352
  • virtio-net: Add validation for used length
• CVE-url: https://ubuntu.com/security/CVE-2024-46745
  • Input: uinput - reject requests with unreasonable number of slots
• CVE-url: https://ubuntu.com/security/CVE-2024-44952
  • driver core: Fix uevent_show() vs driver detach race
• CVE-url: https://ubuntu.com/security/CVE-2024-42304
  • ext4: make sure the first directory block is not a hole
• CVE-url: https://ubuntu.com/security/CVE-2024-42305
  • ext4: check dot and dotdot of dx_root before making dir indexed
• CVE-url: https://ubuntu.com/security/CVE-2024-53168
  • sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
• CVE-url: https://ubuntu.com/security/CVE-2024-49925
  • driver core: add dev_groups to all drivers
  • driver core: Fix error return code in really_probe()
  • fbdev: efifb: Register sysfs groups through driver core
• CVE-url: https://ubuntu.com/security/CVE-2024-56661
  • tipc: fix NULL deref in cleanup_bearer()
• CVE-url: https://ubuntu.com/security/CVE-2024-56642
  • tipc: Fix use-after-free of kernel socket in cleanup_bearer().
• CVE-url: https://ubuntu.com/security/CVE-2021-47163
  • tipc: wait and exit until all work queues are done
• CVE-url: https://ubuntu.com/security/CVE-2024-26915
  • drm/amdgpu: fix IH overflow on Vega10 v2
  • drm/amdgpu: Add check to prevent IH overflow
  • drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
• CVE-url: https://ubuntu.com/security/CVE-2024-56770
  • net/sched: netem: account for backlog updates from child qdisc
  • netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
• CVE-url: https://ubuntu.com/security/CVE-2024-50296
  • net: hns3: fix kernel crash when uninstalling driver
• CVE-url: https://ubuntu.com/security/CVE-2024-53066
  • nfs: Fix KMSAN warning in decode_getfattr_attrs()
• CVE-url: https://ubuntu.com/security/CVE-2024-49944
  • sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
• CVE-url: https://ubuntu.com/security/CVE-2024-50237
  • wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
• CVE-url: https://ubuntu.com/security/CVE-2024-46780
  • nilfs2: protect references to superblock parameters exposed in sysfs
• CVE-url: https://ubuntu.com/security/CVE-2024-53063
  • media: dvbdev: prevent the risk of out of memory access
  • media: dvbdev: fix the logic when DVB_DYNAMIC_MINORS is not set
• CVE-url: https://ubuntu.com/security/CVE-2023-52927
  • netfilter: allow exp not to be removed in nf_ct_find_expectation
• CVE-url: https://ubuntu.com/security/CVE-2021-47150
  • net: fec: fix the potential memory leak in fec_enet_init()
• CVE-url: https://ubuntu.com/security/CVE-2024-53140
  • netlink: terminate outstanding dump on socket close
• CVE-url: https://ubuntu.com/security/CVE-2025-21971
  • net_sched: Prevent creation of classes with TC_H_ROOT
• CVE-url: https://ubuntu.com/security/CVE-2025-37785
  • ext4: fix OOB read when checking dotdot dir
• CVE-url: https://ubuntu.com/security/CVE-2023-52572
  • cifs: Fix UAF in cifs_demultiplex_thread()
• CVE-url: https://ubuntu.com/security/CVE-2022-49738
  • f2fs: fix to do sanity check on summary info
  • f2fs: should put a page when checking the summary info
  • f2fs: fix to do sanity check on i_extra_isize in is_alive()
• CVE-url: https://ubuntu.com/security/CVE-2022-49740
  • wifi: brcmfmac: Check the count value of channel spec to prevent out-of- bounds reads
• CVE-url: https://ubuntu.com/security/
  • ipv6: Define dscp_t and stop taking ECN bits into account in fib6-rules
• CVE-url: https://ubuntu.com/security/CVE-2023-53020
  • l2tp: close all race conditions in l2tp_tunnel_register()
• CVE-url: https://ubuntu.com/security/CVE-2025-21957
  • scsi: qla1280: Fix kernel oops when debug level > 2 *…

[ Ubuntu: 4.15.0-247.258 ]

• CVE-url: https://ubuntu.com/security/CVE-2021-47352
  • virtio-net: Add validation for used length
• CVE-url: https://ubuntu.com/security/CVE-2024-46745
  • Input: uinput - reject requests with unreasonable number of slots
• CVE-url: https://ubuntu.com/security/CVE-2024-44952
  • driver core: Fix uevent_show() vs driver detach race
• CVE-url: https://ubuntu.com/security/CVE-2024-42304
  • ext4: make sure the first directory block is not a hole
• CVE-url: https://ubuntu.com/security/CVE-2024-42305
  • ext4: check dot and dotdot of dx_root before making dir indexed
• CVE-url: https://ubuntu.com/security/CVE-2024-53168
  • sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
• CVE-url: https://ubuntu.com/security/CVE-2024-49925
  • driver core: add dev_groups to all drivers
  • driver core: Fix error return code in really_probe()
  • fbdev: efifb: Register sysfs groups through driver core
• CVE-url: https://ubuntu.com/security/CVE-2024-56661
  • tipc: fix NULL deref in cleanup_bearer()
• CVE-url: https://ubuntu.com/security/CVE-2024-56642
  • tipc: Fix use-after-free of kernel socket in cleanup_bearer().
• CVE-url: https://ubuntu.com/security/CVE-2021-47163
  • tipc: wait and exit until all work queues are done
• CVE-url: https://ubuntu.com/security/CVE-2024-26915
  • drm/amdgpu: fix IH overflow on Vega10 v2
  • drm/amdgpu: Add check to prevent IH overflow
  • drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
• CVE-url: https://ubuntu.com/security/CVE-2024-56770
  • net/sched: netem: account for backlog updates from child qdisc
  • netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
• CVE-url: https://ubuntu.com/security/CVE-2024-50296
  • net: hns3: fix kernel crash when uninstalling driver
• CVE-url: https://ubuntu.com/security/CVE-2024-53066
  • nfs: Fix KMSAN warning in decode_getfattr_attrs()
• CVE-url: https://ubuntu.com/security/CVE-2024-49944
  • sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
• CVE-url: https://ubuntu.com/security/CVE-2024-50237
  • wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
• CVE-url: https://ubuntu.com/security/CVE-2024-46780
  • nilfs2: protect references to superblock parameters exposed in sysfs
• CVE-url: https://ubuntu.com/security/CVE-2024-53063
  • media: dvbdev: prevent the risk of out of memory access
  • media: dvbdev: fix the logic when DVB_DYNAMIC_MINORS is not set
• CVE-url: https://ubuntu.com/security/CVE-2023-52927
  • netfilter: allow exp not to be removed in nf_ct_find_expectation
• CVE-url: https://ubuntu.com/security/CVE-2021-47150
  • net: fec: fix the potential memory leak in fec_enet_init()
• CVE-url: https://ubuntu.com/security/CVE-2024-53140
  • netlink: terminate outstanding dump on socket close
• CVE-url: https://ubuntu.com/security/CVE-2025-21971
  • net_sched: Prevent creation of classes with TC_H_ROOT
• CVE-url: https://ubuntu.com/security/CVE-2025-37785
  • ext4: fix OOB read when checking dotdot dir
• CVE-url: https://ubuntu.com/security/CVE-2023-52572
  • cifs: Fix UAF in cifs_demultiplex_thread()
• CVE-url: https://ubuntu.com/security/CVE-2022-49738
  • f2fs: fix to do sanity check on summary info
  • f2fs: should put a page when checking the summary info
  • f2fs: fix to do sanity check on i_extra_isize in is_alive()
• CVE-url: https://ubuntu.com/security/CVE-2022-49740
  • wifi: brcmfmac: Check the count value of channel spec to prevent out-of- bounds reads
• CVE-url: https://ubuntu.com/security/
  • ipv6: Define dscp_t and stop taking ECN bits into account in fib6-rules
• CVE-url: https://ubuntu.com/security/CVE-2023-53020
  • l2tp: close all race conditions in l2tp_tunnel_register()
• CVE-url: https://ubuntu.com/security/CVE-2025-21957
  • scsi: qla1280: Fix kernel oops…

• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic() {CVE-2025-21993}
• media: uvcvideo: Fix double free in error path {CVE-2024-57980}
• jffs2: Prevent rtime decompress memory corruption {CVE-2024-57850}
• wifi: iwlegacy: Clear stale interrupts before resuming device {CVE-2024-50234}
• udf: fix uninit-value use in udf_get_fileshortad {CVE-2024-50143}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• ubifs: Fix read out-of-bounds in ubifs_wbuf_write_nolock() {CVE-2021-47636}
• kvm: avoid speculation-based attacks from out-of-range memslot accesses {CVE-2021-47277}
• scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() {CVE-2021-47219}
• ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc() {CVE-2022-48702}
• ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface() {CVE-2022-48701}

• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic() {CVE-2025-21993}
• media: uvcvideo: Fix double free in error path {CVE-2024-57980}
• jffs2: Prevent rtime decompress memory corruption {CVE-2024-57850}
• wifi: iwlegacy: Clear stale interrupts before resuming device {CVE-2024-50234}
• udf: fix uninit-value use in udf_get_fileshortad {CVE-2024-50143}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• ubifs: Fix read out-of-bounds in ubifs_wbuf_write_nolock() {CVE-2021-47636}
• kvm: avoid speculation-based attacks from out-of-range memslot accesses {CVE-2021-47277}
• scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() {CVE-2021-47219}
• ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc() {CVE-2022-48702}
• ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface() {CVE-2022-48701}

• vsock: Keep the binding until socket destruction {CVE-2025-21756}
• mt76: fix use-after-free by removing a non-RCU wcid pointer {CVE-2022-49328}
• bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb() {CVE-2022-49840}
• ASoC: core: Fix use-after-free in snd_soc_exit() {CVE-2022-49842}
• net: sched: Fix use after free in red_enqueue() {CVE-2022-49921}
• udf: Fix a slab-out-of-bounds write bug in udf_find_entry() {CVE-2022-49846}
• ftrace: Fix use-after-free for dynamic ftrace_ops {CVE-2022-49892}
• dm ioctl: prevent potential spectre v1 gadget {CVE-2022-49122}
• scsi: libfc: Fix use after free in fc_exch_abts_resp() {CVE-2022-49114}
• mac80211: fix potential double free on mesh join {CVE-2022-49290}
• wifi: mac80211: fix use-after-free in chanctx code {CVE-2022-49416}
• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() {CVE-2023-52988}
• tracing: Fix potential double free in create_var_ref() {CVE-2022-49410}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths {CVE-2022-48991}
• cifs: potential buffer overflow in handling symlinks {CVE-2022-49058}
• media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init {CVE-2022-49478}
• HID: elan: Fix potential double free in elan_input_configured {CVE-2022-49508}
• bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers {CVE-2023-52621}
• drm/amd/pm: fix double free in si_parse_power_table() {CVE-2022-49530}
• drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() {CVE-2025-21780}
• crypto: scomp - fix req->dst buffer overflow {CVE-2023-52612}
• sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket {CVE-2024-53168}
• net: make sock_inuse_add() available {CVE-2024-53168}

• vsock: Keep the binding until socket destruction {CVE-2025-21756}
• mt76: fix use-after-free by removing a non-RCU wcid pointer {CVE-2022-49328}
• bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb() {CVE-2022-49840}
• ASoC: core: Fix use-after-free in snd_soc_exit() {CVE-2022-49842}
• net: sched: Fix use after free in red_enqueue() {CVE-2022-49921}
• udf: Fix a slab-out-of-bounds write bug in udf_find_entry() {CVE-2022-49846}
• ftrace: Fix use-after-free for dynamic ftrace_ops {CVE-2022-49892}
• dm ioctl: prevent potential spectre v1 gadget {CVE-2022-49122}
• scsi: libfc: Fix use after free in fc_exch_abts_resp() {CVE-2022-49114}
• mac80211: fix potential double free on mesh join {CVE-2022-49290}
• wifi: mac80211: fix use-after-free in chanctx code {CVE-2022-49416}
• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() {CVE-2023-52988}
• tracing: Fix potential double free in create_var_ref() {CVE-2022-49410}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths {CVE-2022-48991}
• cifs: potential buffer overflow in handling symlinks {CVE-2022-49058}
• media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init {CVE-2022-49478}
• HID: elan: Fix potential double free in elan_input_configured {CVE-2022-49508}
• bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers {CVE-2023-52621}
• drm/amd/pm: fix double free in si_parse_power_table() {CVE-2022-49530}
• drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() {CVE-2025-21780}
• crypto: scomp - fix req->dst buffer overflow {CVE-2023-52612}
• sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket {CVE-2024-53168}
• net: make sock_inuse_add() available {CVE-2024-53168}

• KVM: x86: Fix shadow paging use-after-free due to unexpected GFN/role {CVE-2026-46113}
• btrfs: fix use-after-free after failure to create a snapshot {CVE-2022-48733}
• Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold {CVE-2026-31408}
• xfs: delete attr leaf freemap entries when empty {CVE-2026-43158}
• net: atlantic: eliminate double free in error handling logic {CVE-2023-52664}
• media: dvbdev: adopts refcnt to avoid UAF {CVE-2022-50274}
• igbvf: fix double free in igbvf_probe {CVE-2021-47589}
• scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() {CVE-2021-47576}
• ALSA: seq: Fix race of snd_seq_timer_open() {CVE-2021-47281}
• net: af_key: zero aligned sockaddr tail in PF_KEY exports {CVE-2026-43088}
• IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields {CVE-2021-47485}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• proc/vmcore: fix clearing user buffer by properly using clear_user()
• staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
• ASoC: ops: Correct bounds check for second channel on SX controls {CVE-2022-48951}
• ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx() {CVE-2022-48951}
• nfsd: fix use-after-free due to delegation race {CVE-2021-47506}

• KVM: x86: Fix shadow paging use-after-free due to unexpected GFN/role {CVE-2026-46113}
• btrfs: fix use-after-free after failure to create a snapshot {CVE-2022-48733}
• Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold {CVE-2026-31408}
• xfs: delete attr leaf freemap entries when empty {CVE-2026-43158}
• net: atlantic: eliminate double free in error handling logic {CVE-2023-52664}
• media: dvbdev: adopts refcnt to avoid UAF {CVE-2022-50274}
• igbvf: fix double free in igbvf_probe {CVE-2021-47589}
• scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() {CVE-2021-47576}
• ALSA: seq: Fix race of snd_seq_timer_open() {CVE-2021-47281}
• net: af_key: zero aligned sockaddr tail in PF_KEY exports {CVE-2026-43088}
• IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields {CVE-2021-47485}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• proc/vmcore: fix clearing user buffer by properly using clear_user()
• staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
• ASoC: ops: Correct bounds check for second channel on SX controls {CVE-2022-48951}
• ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx() {CVE-2022-48951}
• nfsd: fix use-after-free due to delegation race {CVE-2021-47506}

• KVM: x86: Fix shadow paging use-after-free due to unexpected GFN/role {CVE-2026-46113}
• btrfs: fix use-after-free after failure to create a snapshot {CVE-2022-48733}
• Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold {CVE-2026-31408}
• xfs: delete attr leaf freemap entries when empty {CVE-2026-43158}
• net: atlantic: eliminate double free in error handling logic {CVE-2023-52664}
• media: dvbdev: adopts refcnt to avoid UAF {CVE-2022-50274}
• igbvf: fix double free in igbvf_probe {CVE-2021-47589}
• scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() {CVE-2021-47576}
• ALSA: seq: Fix race of snd_seq_timer_open() {CVE-2021-47281}
• net: af_key: zero aligned sockaddr tail in PF_KEY exports {CVE-2026-43088}
• IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields {CVE-2021-47485}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• proc/vmcore: fix clearing user buffer by properly using clear_user()
• staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
• ASoC: ops: Correct bounds check for second channel on SX controls {CVE-2022-48951}
• ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx() {CVE-2022-48951}
• nfsd: fix use-after-free due to delegation race {CVE-2021-47506}

• KVM: x86: Check for invalid/obsolete root after making MMU pages available {CVE-2026-64561}
• KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level {CVE-2026-63807}
• Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak {CVE-2025-40035}
• thunderbolt: Limit XDomain response copy to actual frame size {CVE-2026-53146}
• drm/gud: Fix UBSAN warning {CVE-2022-50628}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• scsi: qla2xxx: Fix DMA-API call trace on NVMe LS requests {CVE-2023-54108}
• fs: udf: fix OOB read in lengthAllocDescs handling {CVE-2025-40044}
• tipc: Fix use-after-free in tipc_mon_reinit_self(). {CVE-2025-40280}
• isofs: Fix out of bound access for corrupted isofs image {CVE-2021-47478}
• pppoe: drop PFC frames {CVE-2026-53003}
• nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free {CVE-2026-46304}
• net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery {CVE-2026-43466}
• scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails {CVE-2026-45997}
• irqchip/gic-v3: Fix error handling in gic_populate_ppi_partitions {CVE-2022-49716}
• drm/nouveau: fix u32 overflow in pushbuf reloc bounds check {CVE-2026-46006}
• can: dev: can_set_termination(): allow sleeping GPIOs {CVE-2024-56625}
• cxl/mem: Fix shutdown order {CVE-2023-52849}
• pinctrl: check the return value of pinmux_ops::get_function_name() {CVE-2025-40030}
• usb: usbtmc: Flush anchored URBs in usbtmc_release {CVE-2026-31758}
• RDMA/siw: Fix potential NULL pointer dereference in header processing {CVE-2026-23242}
• ASoC: wm_adsp: Fix NULL dereference when removing firmware controls {CVE-2026-53350}
• net: bcmgenet: fix off-by-one in bcmgenet_put_txcb {CVE-2026-53088}
• HID: multitouch: Check to ensure report responses match the request {CVE-2026-43047}
• can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak {CVE-2026-23058}
• firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle {CVE-2023-53250}
• usb: storage: Fix memory leak in USB bulk transport {CVE-2025-68288}
• wifi: rtw88: check for PCI upstream bridge existence {CVE-2026-46092}
• crypto: ccp: Don't attempt to copy ID to userspace if PSP command failed {CVE-2026-31697}
• scsi: qla2xxx: Fix memory leak in __qlt_24xx_handle_abts() {CVE-2022-48650}
• HID: apple: avoid memory leak in apple_report_fixup() {CVE-2026-31520}
• HID: magicmouse: avoid memory leak in magicmouse_report_fixup() {CVE-2026-31522}
• scsi: qla2xxx: Avoid fcport pointer dereference {CVE-2023-53603}
• RDMA/mlx4: Fix resource leak on error in mlx4_ib_create_srq() {CVE-2026-46178}
• scsi: mpi3mr: Add NULL checks when resetting request and reply queues {CVE-2026-43473}
• HID: roccat: fix use-after-free in roccat_report_event {CVE-2026-43111}
• tap: free page on error paths in tap_get_user_xdp() {CVE-2026-46320}
• net: usb: kaweth: remove TX queue manipulation in kaweth_set_rx_mode {CVE-2026-43180}
• usb: xhci: Fix memory leak in xhci_disable_slot() {CVE-2026-43432}
• PCI: Fix reset_method_store() memory leak {CVE-2024-56745}
• rbd: fix null-ptr-deref when device_add_disk() fails {CVE-2026-46079}
• net: stmmac: fix integer underflow in chain mode {CVE-2026-31649}
• be2net: pass wrb_params in case of OS2BMC {CVE-2025-40264}
• thunderbolt: Validate XDomain request packet size before type cast {CVE-2026-53147}
• Input: uinput - fix circular locking dependency with ff-core {CVE-2026-31667}
• usb: dwc2: fix possible NULL pointer dereference caused by driver concurrency {CVE-2023-52855}
• nbd: defer config put in recv_work {CVE-2025-68372}
• net: hns3: using the num_tqps in the vf driver to apply for resources {CVE-2025-71064}
• serial: imx: fix tx statemachine deadlock {CVE-2023-52456}
• bonding: Fix unnecessary warnings and logs from bond_xdp_get_xmit_slave() {CVE-2024-47734}
• dm-thin: fix metadata refcount underflow {CVE-2026-46107}
• net: mana: fix use-after-free in mana_hwc_destroy_channel() by reordering…

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

The following security bugs were fixed:

• CVE-2021-46925: Fixed kernel panic caused by race of smc_sock (bsc#1220466).
• CVE-2021-47645: media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com (bsc#1237767).
• CVE-2021-47648: gpu: host1x: Fix a memory leak in 'host1x_remove()' (bsc#1237725).
• CVE-2022-49046: i2c: dev: check return value when calling dev_set_name() (bsc#1237842).
• CVE-2022-49051: net: usb: aqc111: Fix out-of-bounds accesses in RX fixup (bsc#1237903).
• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49059: nfc: nci: add flush_workqueue to prevent uaf (bsc#1238007).
• CVE-2022-49074: irqchip/gic-v3: Fix GICR_CTLR.RWP polling (bsc#1237728).
• CVE-2022-49075: btrfs: fix qgroup reserve overflow the qgroup limit (bsc#1237733).
• CVE-2022-49084: qede: confirm skb is allocated before using (bsc#1237751).
• CVE-2022-49107: ceph: fix memory leak in ceph_readdir when note_last_dentry returns error (bsc#1237973).
• CVE-2022-49109: ceph: fix inode reference leakage in ceph_get_snapdir() (bsc#1237836).
• CVE-2022-49119: scsi: pm8001: Fix memory leak in pm8001_chip_fw_flash_update_req() (bsc#1237925).
• CVE-2022-49120: scsi: pm8001: Fix task leak in pm8001_send_abort_all() (bsc#1237969).
• CVE-2022-49209: bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full (bsc#1238252).
• CVE-2022-49220: dax: make sure inodes are flushed before destroy cache (bsc#1237936).
• CVE-2022-49275: can: m_can: m_can_tx_handler(): fix use after free of skb (bsc#1238719).
• CVE-2022-49286: tpm: use try_get_ops() in tpm-space.c (bsc#1238647).
• CVE-2022-49292: ALSA: oss: Fix PCM OSS buffer allocation overflow (bsc#1238625).
• CVE-2022-49308: extcon: Modify extcon device to be created after driver data is set (bsc#1238654).
• CVE-2022-49331: nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling (bsc#1237813).
• CVE-2022-49344: af_unix: Fix a data-race in unix_dgram_peer_wake_me() (bsc#1237988).
• CVE-2022-49367: net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register (bsc#1238447).
• CVE-2022-49370: firmware: dmi-sysfs: Fix memory leak in dmi_sysfs_register_handle (bsc#1238467).
• CVE-2022-49372: tcp: tcp_rtx_synack() can be called from process context (bsc#1238251).
• CVE-2022-49388: ubi: ubi_create_volume: Fix use-after-free when volume creation failed (bsc#1237934).
• CVE-2022-49395: um: Fix out-of-bounds read in LDT setup (bsc#1237953).
• CVE-2022-49397: phy: qcom-qmp: fix struct clk leak on probe errors (bsc#1237823).
• CVE-2022-49404: RDMA/hfi1: Fix potential integer multiplication overflow errors (bsc#1238430).
• CVE-2022-49416: wifi: mac80211: fix use-after-free in chanctx code (bsc#1238293).
• CVE-2022-49433: RDMA/hfi1: Prevent use of lock before it is initialized (bsc#1238268).
• CVE-2022-49472: net: phy: micrel: Allow probing without .driver_data (bsc#1238951).
• CVE-2022-49488: drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock (bsc#1238600).
• CVE-2022-49495: drm/msm/hdmi: check return value after calling platform_get_resource_byname() (bsc#1237932).
• CVE-2022-49497: net: remove two BUG() from skb_checksum_help() (bsc#1238946).
• CVE-2022-49505: NFC: NULL out the dev->rfkill to prevent UAF (bsc#1238615).
• CVE-2022-49516: ice: always check VF VSI pointer values (bsc#1238953).
• CVE-2022-49519: ath10k: skip ath10k_halt during suspend for driver state RESTARTING (bsc#1238943).
• CVE-2022-49524: media: pci: cx23885: Fix the error handling in cx23885_initdev() (bsc#1238949).
• CVE-2022-49530: drm/amd/pm: fix double free in si_parse_power_table() (bsc#1238944).
• CVE-2022-49538: ALSA: jack: Fix mutex call in snd_jack_report() (bsc#1238843).
• CVE-2022-49544: ipw2x00: Fix potential NULL dereference in libipw_xmit() (bsc#1238721).
• CVE-2022-49545: ALSA: usb-audio: Cancel pending work at closing a MIDI substream (bsc#1238729). -…