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Fencer Vulns
high 7.8

CVE-2025-40064 json

smc: Fix use-after-free in __pnet_find_base_ndev().

published 2025-10-28 12 mo ago modified 2026-10-19 20 d ago also EUVD-2025-36464

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

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

smc: Fix use-after-free in __pnet_find_base_ndev().

syzbot reported use-after-free of net_device in __pnet_find_base_ndev(), which was called during connect(). [0]

smc_pnet_find_ism_resource() fetches sk_dst_get(sk)->dev and passes down to pnet_find_base_ndev(), where RTNL is held. Then, UAF happened at __pnet_find_base_ndev() when the dev is first used.

This means dev had already been freed before acquiring RTNL in pnet_find_base_ndev().

While dev is going away, dst->dev could be swapped with blackhole_netdev, and the dev's refcnt by dst will be released.

We must hold dev's refcnt before calling smc_pnet_find_ism_resource().

Also, smc_pnet_find_roce_resource() has the same problem.

Let's use __sk_dst_get() and dst_dev_rcu() in the two functions.

[0]: BUG: KASAN: use-after-free in __pnet_find_base_ndev+0x1b1/0x1c0 net/smc/smc_pnet.c:926 Read of size 1 at addr ffff888036bac33a by task syz.0.3632/18609

CPU: 1 UID: 0 PID: 18609 Comm: syz.0.3632 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 __pnet_find_base_ndev+0x1b1/0x1c0 net/smc/smc_pnet.c:926 pnet_find_base_ndev net/smc/smc_pnet.c:946 [inline] smc_pnet_find_ism_by_pnetid net/smc/smc_pnet.c:1103 [inline] smc_pnet_find_ism_resource+0xef/0x390 net/smc/smc_pnet.c:1154 smc_find_ism_device net/smc/af_smc.c:1030 [inline] smc_find_proposal_devices net/smc/af_smc.c:1115 [inline] __smc_connect+0x372/0x1890 net/smc/af_smc.c:1545 smc_connect+0x877/0xd90 net/smc/af_smc.c:1715 __sys_connect_file net/socket.c:2086 [inline] __sys_connect+0x313/0x440 net/socket.c:2105 __do_sys_connect net/socket.c:2111 [inline] __se_sys_connect net/socket.c:2108 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:2108 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f47cbf8eba9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f47ccdb1038 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f47cc1d5fa0 RCX: 00007f47cbf8eba9 RDX: 0000000000000010 RSI: 0000200000000280 RDI: 000000000000000b RBP: 00007f47cc011e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f47cc1d6038 R14: 00007f47cc1d5fa0 R15: 00007ffc512f8aa8 </TASK>

The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888036bacd00 pfn:0x36bac flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001243d08 ffff8880b863fdc0 0000000000000000 raw: ffff888036bacd00 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 2, migratetype Unmovable, gfp_mask 0x446dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_COMP), pid 16741, tgid 16741 (syz-executor), ts 343313197788, free_ts 380670750466 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851 prep_new_page mm/page_alloc.c:1859 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3858 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 ___kmalloc_large_node+0x5f/0x1b0 mm/slub.c:4317 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:4348 __do_kmalloc_node mm/slub.c:4364 [inline] __kvmalloc_node ---truncated---

Patch / fix

  • Linux Linux 6.1.187, 6.6.156, 6.12.108, 6.17.3, 6.18
  • linux Debian 12 6.1.187-1
  • linux Debian 13 6.12.111-1
  • linux Debian 14 6.17.6-1
  • linux-6.12 Debian 12 6.12.111-1~deb12u1

debian advisories DEBIAN-CVE-2025-40064

  • linux Ubuntu 25.10 6.17.0-14.14
  • linux-aws Ubuntu 25.10 6.17.0-1007.7
  • linux-gcp Ubuntu 25.10 6.17.0-1007.7
  • linux-azure Ubuntu 25.10 6.17.0-1008.8
  • linux-raspi Ubuntu 25.10 6.17.0-1008.8
  • linux-riscv Ubuntu 25.10 6.17.0-14.14.1
  • linux-oracle Ubuntu 25.10 6.17.0-1007.7
  • linux-aws-6.17 Ubuntu 24.04 LTS 6.17.0-1007.7~24.04.1

ubuntu advisories UBUNTU-CVE-2025-40064

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 9 5.14.0-687.44.1.el9_8
  • rv RHEL 9 5.14.0-687.44.1.el9_8
  • perf RHEL 9 5.14.0-687.44.1.el9_8
  • rtla RHEL 9 5.14.0-687.44.1.el9_8
  • libperf RHEL 9 5.14.0-687.44.1.el9_8
  • kernel-rt RHEL 9 5.14.0-687.44.1.el9_8
  • kernel-64k RHEL 9 5.14.0-687.44.1.el9_8
  • kernel-core RHEL 9 5.14.0-687.44.1.el9_8

red hat advisories RHSA-2026:63129RHSA-2026:27708RHSA-2026:9643RHSA-2026:9514RHSA-2026:9513RHSA-2026:6954

  • kernel-source Linux Micro 6.1, Linux Micro 6.0 6.4.0-38.1
  • kernel-default Linux Micro 6.1, Linux Micro 6.0 6.4.0-38.1
  • kernel-kvmsmall Linux Micro 6.1, Linux Micro 6.0 6.4.0-38.1
  • kernel-default-base Linux Micro 6.1, Linux Micro 6.0 6.4.0-38.1.21.15
  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-39.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-39.1
  • kernel-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.61.1
  • kernel-syms-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.61.1

suse advisories SUSE-SU-2026:20473-1SUSE-SU-2026:20496-1SUSE-SU-2026:0316-1SUSE-SU-2026:20039-1SUSE-SU-2026:20059-1SUSE-SU-2025:4521-1

  • kernel-source-longterm openSUSE Tumbleweed 6.18.16-1.1
  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.8.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.8.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.8.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.8.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.8.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.8.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.8.1

opensuse advisories openSUSE-SU-2026:10301-1openSUSE-SU-2025:20172-1openSUSE-SU-2025:15702-1

  • kernel AlmaLinux 9 5.14.0-687.44.1.el9_8
  • rv AlmaLinux 9 5.14.0-687.44.1.el9_8
  • perf AlmaLinux 9 5.14.0-687.44.1.el9_8
  • rtla AlmaLinux 9 5.14.0-687.44.1.el9_8
  • libperf AlmaLinux 9 5.14.0-687.44.1.el9_8
  • kernel-rt AlmaLinux 9 5.14.0-687.44.1.el9_8
  • kernel-64k AlmaLinux 9 5.14.0-687.44.1.el9_8
  • kernel-core AlmaLinux 9 5.14.0-687.44.1.el9_8

almalinux advisories ALSA-2026:63129ALSA-2026:3083ALSA-2026:3110ALSA-2026:2721ALSA-2026:2722

  • kernel Rocky Linux 9 5.14.0-687.44.1.el9_8
  • kernel Rocky Linux 10 6.12.0-124.38.1.el10_1
  • kernel Rocky Linux 9 5.14.0-611.34.1.el9_7

rocky linux advisories RLSA-2026:63129RLSA-2026:2721RLSA-2026:2722

  • kernel Azure Linux 3.0 6.6.157.1-1

azure linux advisories AZL-68897

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-40064 updated cvss 7.1

kernel: smc: Fix use-after-free in __pnet_find_base_ndev()

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.123.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.123.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.123.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.123.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.123.1.el9_6
    fixed: vendor fix RHSA-2026:27708
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.34.1.el9_7, rv 5.14.0-687.44.1.el9_8, perf 5.14.0-611.34.1.el9_7, perf 5.14.0-687.44.1.el9_8, rtla 5.14.0-611.34.1.el9_7, rtla 5.14.0-687.44.1.el9_8, +20 more
    fixed: vendor fix RHSA-2026:2722
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-124.38.1.el10_1, perf 6.12.0-124.38.1.el10_1, rtla 6.12.0-124.38.1.el10_1, python3-perf 6.12.0-124.38.1.el10_1, kernel-devel-matched 6.12.0-124.38.1.el10_1, kernel-64k-devel-matched 6.12.0-124.38.1.el10_1, +7 more
    fixed: vendor fix RHSA-2026:2721
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.63.1.el10_0, perf 6.12.0-55.63.1.el10_0, rtla 6.12.0-55.63.1.el10_0, python3-perf 6.12.0-55.63.1.el10_0, kernel-devel-matched 6.12.0-55.63.1.el10_0, kernel-64k-devel-matched 6.12.0-55.63.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:4111
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.123.1.el9_6, perf 5.14.0-570.123.1.el9_6, rtla 5.14.0-570.123.1.el9_6, python3-perf 5.14.0-570.123.1.el9_6, kernel-devel-matched 5.14.0-570.123.1.el9_6, kernel-64k-devel-matched 5.14.0-570.123.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:27708
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.107.1.el8_10, kernel 4.18.0-553.107.1.el8_10, bpftool 4.18.0-553.107.1.el8_10, kernel-core 4.18.0-553.107.1.el8_10, kernel-tools 4.18.0-553.107.1.el8_10, python3-perf 4.18.0-553.107.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:3083
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.34.1.el9_7, kernel 5.14.0-687.44.1.el9_8, kernel-64k 5.14.0-611.34.1.el9_7, kernel-64k 5.14.0-687.44.1.el9_8, kernel-core 5.14.0-611.34.1.el9_7, kernel-core 5.14.0-687.44.1.el9_8, +60 more
    fixed: vendor fix RHSA-2026:2722
show 25 more
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-124.38.1.el10_1, kernel-64k 6.12.0-124.38.1.el10_1, kernel-core 6.12.0-124.38.1.el10_1, kernel-tools 6.12.0-124.38.1.el10_1, kernel-modules 6.12.0-124.38.1.el10_1, kernel-64k-core 6.12.0-124.38.1.el10_1, +28 more
    fixed: vendor fix RHSA-2026:2721
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.195.1.el8_2, kernel 4.18.0-193.195.1.el8_2, bpftool 4.18.0-193.195.1.el8_2, kernel-core 4.18.0-193.195.1.el8_2, kernel-tools 4.18.0-193.195.1.el8_2, python3-perf 4.18.0-193.195.1.el8_2, +8 more
    fixed: vendor fix RHSA-2026:9513
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.189.1.el8_4, kernel 4.18.0-305.189.1.el8_4, bpftool 4.18.0-305.189.1.el8_4, kernel-core 4.18.0-305.189.1.el8_4, kernel-tools 4.18.0-305.189.1.el8_4, python3-perf 4.18.0-305.189.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:9643
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.188.1.el8_6, kernel 4.18.0-372.188.1.el8_6, bpftool 4.18.0-372.188.1.el8_6, kernel-core 4.18.0-372.188.1.el8_6, kernel-tools 4.18.0-372.188.1.el8_6, python3-perf 4.18.0-372.188.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.188.1.el8_6, kernel 4.18.0-372.188.1.el8_6, bpftool 4.18.0-372.188.1.el8_6, kernel-core 4.18.0-372.188.1.el8_6, kernel-tools 4.18.0-372.188.1.el8_6, python3-perf 4.18.0-372.188.1.el8_6, +15 more
    fixed: vendor fix RHSA-2026:9514
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.135.1.el8_8, kernel 4.18.0-477.135.1.el8_8, bpftool 4.18.0-477.135.1.el8_8, kernel-core 4.18.0-477.135.1.el8_8, kernel-tools 4.18.0-477.135.1.el8_8, python3-perf 4.18.0-477.135.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:6954
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.63.1.el10_0, kernel-64k 6.12.0-55.63.1.el10_0, kernel-core 6.12.0-55.63.1.el10_0, kernel-tools 6.12.0-55.63.1.el10_0, kernel-modules 6.12.0-55.63.1.el10_0, kernel-64k-core 6.12.0-55.63.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:4111
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.123.1.el9_6, kernel-64k 5.14.0-570.123.1.el9_6, kernel-core 5.14.0-570.123.1.el9_6, kernel-tools 5.14.0-570.123.1.el9_6, kernel-modules 5.14.0-570.123.1.el9_6, kernel-64k-core 5.14.0-570.123.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:27708
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.189.1.el8_4, kernel 4.18.0-305.189.1.el8_4, bpftool 4.18.0-305.189.1.el8_4, kernel-core 4.18.0-305.189.1.el8_4, kernel-tools 4.18.0-305.189.1.el8_4, python3-perf 4.18.0-305.189.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:9643
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.188.1.el8_6, kernel 4.18.0-372.188.1.el8_6, bpftool 4.18.0-372.188.1.el8_6, kernel-core 4.18.0-372.188.1.el8_6, kernel-tools 4.18.0-372.188.1.el8_6, python3-perf 4.18.0-372.188.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:9514
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.135.1.el8_8, kernel 4.18.0-477.135.1.el8_8, bpftool 4.18.0-477.135.1.el8_8, kernel-core 4.18.0-477.135.1.el8_8, kernel-tools 4.18.0-477.135.1.el8_8, python3-perf 4.18.0-477.135.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:6954
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.34.1.el9_7, libperf 5.14.0-687.44.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-611.34.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-687.44.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-611.34.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-687.44.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:2722
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-124.38.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-124.38.1.el10_1, kernel-debuginfo-common-x86_64 6.12.0-124.38.1.el10_1, kernel-debuginfo-common-aarch64 6.12.0-124.38.1.el10_1, kernel-debuginfo-common-ppc64le 6.12.0-124.38.1.el10_1
    fixed: vendor fix RHSA-2026:2721
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.63.1.el10_0
    fixed: vendor fix RHSA-2026:4111
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.107.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.107.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.107.1.el8_10
    fixed: vendor fix RHSA-2026:3083
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-kvm 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-core 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-modules 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-debug-kvm 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-debug-core 4.18.0-553.107.1.rt7.448.el8_10, +4 more
    fixed: vendor fix RHSA-2026:3110
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.34.1.el9_7, kernel-rt 5.14.0-687.44.1.el9_8, kernel-rt-64k 5.14.0-611.34.1.el9_7, kernel-rt-64k 5.14.0-687.44.1.el9_8, kernel-rt-core 5.14.0-611.34.1.el9_7, kernel-rt-core 5.14.0-687.44.1.el9_8, +34 more
    fixed: vendor fix RHSA-2026:2722
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-124.38.1.el10_1, kernel-rt-64k 6.12.0-124.38.1.el10_1, kernel-rt-core 6.12.0-124.38.1.el10_1, kernel-rt-modules 6.12.0-124.38.1.el10_1, kernel-rt-64k-core 6.12.0-124.38.1.el10_1, kernel-rt-debug-core 6.12.0-124.38.1.el10_1, +14 more
    fixed: vendor fix RHSA-2026:2721
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.63.1.el10_0, kernel-rt-64k 6.12.0-55.63.1.el10_0, kernel-rt-core 6.12.0-55.63.1.el10_0, kernel-rt-modules 6.12.0-55.63.1.el10_0, kernel-rt-64k-core 6.12.0-55.63.1.el10_0, kernel-rt-debug-core 6.12.0-55.63.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:4111
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.123.1.el9_6, kernel-rt-64k 5.14.0-570.123.1.el9_6, kernel-rt-core 5.14.0-570.123.1.el9_6, kernel-rt-modules 5.14.0-570.123.1.el9_6, kernel-rt-64k-core 5.14.0-570.123.1.el9_6, kernel-rt-debug-core 5.14.0-570.123.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:27708
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.34.1.el9_7, kernel-rt 5.14.0-687.44.1.el9_8, kernel-rt-core 5.14.0-611.34.1.el9_7, kernel-rt-core 5.14.0-687.44.1.el9_8, kernel-rt-modules 5.14.0-611.34.1.el9_7, kernel-rt-modules 5.14.0-687.44.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:2722
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-124.38.1.el10_1, kernel-rt-core 6.12.0-124.38.1.el10_1, kernel-rt-modules 6.12.0-124.38.1.el10_1, kernel-rt-debug-core 6.12.0-124.38.1.el10_1, kernel-rt-modules-core 6.12.0-124.38.1.el10_1, kernel-rt-debug-modules 6.12.0-124.38.1.el10_1, +4 more
    fixed: vendor fix RHSA-2026:2721
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.63.1.el10_0, kernel-rt-kvm 6.12.0-55.63.1.el10_0, kernel-rt-core 6.12.0-55.63.1.el10_0, kernel-rt-modules 6.12.0-55.63.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.63.1.el10_0, kernel-rt-debug-core 6.12.0-55.63.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:4111
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.123.1.el9_6, kernel-rt-kvm 5.14.0-570.123.1.el9_6, kernel-rt-core 5.14.0-570.123.1.el9_6, kernel-rt-modules 5.14.0-570.123.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.123.1.el9_6, kernel-rt-debug-core 5.14.0-570.123.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:27708
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-core 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-modules 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-debug-core 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-debug-modules 4.18.0-553.107.1.rt7.448.el8_10, kernel-rt-modules-extra 4.18.0-553.107.1.rt7.448.el8_10, +2 more
    fixed: vendor fix RHSA-2026:3110
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.