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OpenAdvisories
High 2 exploited CVEs LSN-0116-1 7 CVEs

Kernel Live Patch Security Notice

Published Nov 17, 2025 · Updated Jun 3, 2026

Ecosystem: Ubuntu

Summary

In the Linux kernel, the following vulnerability has been
resolved: net: atlantic: eliminate double free in error handling logic
Driver has a logic leak in ring data allocation/free, where aq_ring_free
could be called multiple times on same ring, if system is under stress and
got memory allocation error.

In the Linux kernel, the following vulnerability has been
resolved: sctp: properly validate chunk size in sctp_sf_ootb() A size
validation fix similar to that in Commit 50619dbf8db7 ('sctp: add size
validation when walking chunks') is also required in sctp_sf_ootb() to
address a crash reported by syzbot: BUG: KMSAN: uninit-value in
sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712
sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712
sctp_do_sm+0x181/0x93d0 net/sctp/sm_sideeffect.c:1166
sctp_endpoint_bh_rcv+0xc38/0xf90 net/sctp/endpointola.c:407
sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88 sctp_rcv+0x3831/0x3b20
net/sctp/input.c:243 sctp4_rcv+0x42/0x50 net/sctp/protocol.c:1159
ip_protocol_deliver_rcu+0xb51/0x13d0 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x336/0x500 net/ipv4/ip_input.c:233)(CVE-2024-50299).

In the Linux kernel, the following vulnerability has been
resolved: ALSA: usb-audio: Fix out of bounds reads when finding clock
sources The current USB-audio driver code doesn't check bLength of each
descriptor at traversing for clock descriptors.

In the Linux kernel, the following vulnerability has been
resolved: ubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit
After an insertion in TNC, the tree might split and cause a node to change
its `znode->parent`.

In the Linux kernel, the following vulnerability has been
resolved: NFSD: Prevent NULL dereference in nfsd4_process_cb_update() @ses
is initialized to NULL.

In the Linux kernel, the following vulnerability has been
resolved: padata: fix UAF in padata_reorder A bug was found when run ltp
test: BUG: KASAN: slab-use-after-free in padata_find_next+0x29/0x1a0 Read
of size 4 at addr ffff88bbfe003524 by task kworker/u113:2/3039206 CPU: 0
PID: 3039206 Comm: kworker/u113:2 Kdump: loaded Not tainted 6.6.0+
Workqueue: pdecrypt_parallel padata_parallel_worker Call Trace: <TASK>
dump_stack_lvl+0x32/0x50 print_address_description.constprop.0+0x6b/0x3d0
print_report+0xdd/0x2c0 kasan_report+0xa5/0xd0 padata_find_next+0x29/0x1a0
padata_reorder+0x131/0x220 padata_parallel_worker+0x3d/0xc0
process_one_work+0x2ec/0x5a0 If 'mdelay(10)' is added before calling
'padata_find_next' in the 'padata_reorder' function, this issue could be
reproduced easily with ltp test (pcrypt_aead01).

In the Linux kernel, the following vulnerability has been
resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and
posix_cpu_timer_del() If an exiting non-autoreaping task has already passed
exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be
reaped by its parent or debugger right after unlock_task_sighand().

Fixed packages 33

ReleasePackageFixed in
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-lts-xenial 4.4.0-276.310~14.04.1
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux 4.4.0-276.310
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-aws 4.4.0-1188.203
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-aws-hwe 4.15.0-1187.200~16.04.1
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-gcp 4.15.0-1180.197~16.04.1
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-hwe 4.15.0-245.257~16.04.1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS linux 4.15.0-245.257
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS linux-aws 4.15.0-1187.200
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS linux-gcp-4.15 4.15.0-1180.197
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS linux-hwe-5.4 5.4.0-223.243~18.04.1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS linux-oracle 4.15.0-1149.160
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux 5.4.0-223.243
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-aws 5.4.0-1152.162
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-aws-5.15 5.15.0-1092.99~20.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-azure-5.15 5.15.0-1096.105~20.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-gcp-5.15 5.15.0-1092.101~20.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-hwe-5.15 5.15.0-156.166~20.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-ibm-5.15 5.15.0-1086.89~20.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-lowlatency-hwe-5.15 5.15.0-156.166~20.04.1
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS linux-oracle-5.15 5.15.0-1090.96~20.04.1
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux 5.15.0-156.166
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux-aws 5.15.0-1092.99
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux-azure 5.15.0-1096.105
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux-gcp 5.15.0-1092.101
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux-gke 5.15.0-1089.95
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux-ibm 5.15.0-1086.89
Ubuntu · Pro 22.04 LTS Pro:22.04:LTS linux-oracle 5.15.0-1090.96
Ubuntu · Pro 24.04 LTS Pro:24.04:LTS linux 6.8.0-87.88
Ubuntu · Pro 24.04 LTS Pro:24.04:LTS linux-aws 6.8.0-1042.44
Ubuntu · Pro 24.04 LTS Pro:24.04:LTS linux-azure 6.8.0-1044.50
Ubuntu · Pro 24.04 LTS Pro:24.04:LTS linux-gcp 6.8.0-1043.46
Ubuntu · Pro 24.04 LTS Pro:24.04:LTS linux-ibm 6.8.0-1040.40
Ubuntu · Pro 24.04 LTS Pro:24.04:LTS linux-oracle 6.8.0-1039.40

Vulnerabilities 7

  • High 7.8
    CVE-2025-38352 Exploited Public exploit

    posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

    In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
    KEV Sep 4, 2025
  • High 7.1
    CVE-2024-53150 Exploited

    ALSA: usb-audio: Fix out of bounds reads when finding clock sources

    In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out of bounds reads when finding clock sources The current USB-audio driver code doesn't check bLength of each descriptor at traversing for clock descriptors. That is, wh…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
    KEV Apr 9, 2025
  • High 8.2
    CVE-2024-50299

    sctp: properly validate chunk size in sctp_sf_ootb()

    In the Linux kernel, the following vulnerability has been resolved: sctp: properly validate chunk size in sctp_sf_ootb() A size validation fix similar to that in Commit 50619dbf8db7 ("sctp: add size validation when walking chunks") is also required in sctp_sf…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2023-52664

    net: atlantic: eliminate double free in error handling logic

    In the Linux kernel, the following vulnerability has been resolved: net: atlantic: eliminate double free in error handling logic Driver has a logic leak in ring data allocation/free, where aq_ring_free could be called multiple times on same ring, if system is…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2024-53171

    ubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit

    In the Linux kernel, the following vulnerability has been resolved: ubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit After an insertion in TNC, the tree might split and cause a node to change its `znode->parent`. A further deletion of other n…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-21727

    padata: fix UAF in padata_reorder

    In the Linux kernel, the following vulnerability has been resolved: padata: fix UAF in padata_reorder A bug was found when run ltp test: BUG: KASAN: slab-use-after-free in padata_find_next+0x29/0x1a0 Read of size 4 at addr ffff88bbfe003524 by task kworker/u11…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.5
    CVE-2024-53217

    NFSD: Prevent NULL dereference in nfsd4_process_cb_update()

    In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent NULL dereference in nfsd4_process_cb_update() @ses is initialized to NULL. If __nfsd4_find_backchannel() finds no available backchannel session, setup_callback_client() will try…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • report
    https://ubuntu.com/security/CVE-2023-52664
  • report
    https://ubuntu.com/security/CVE-2024-50299
  • report
    https://ubuntu.com/security/CVE-2024-53150
  • report
    https://ubuntu.com/security/CVE-2024-53171
  • report
    https://ubuntu.com/security/CVE-2024-53217
  • report
    https://ubuntu.com/security/CVE-2025-21727
  • report
    https://ubuntu.com/security/CVE-2025-38352