Skip to content
Fencer Intel
high 7.8

CVE-2025-38051 json

smb: client: Fix use-after-free in cifs_fill_dirent

published last yr. modified 3mo ago also EUVD-2025-18602

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

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

smb: client: Fix use-after-free in cifs_fill_dirent

There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning.

================================================================== BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs] Read of size 4 at addr ffff8880099b819c by task a.out/342975

CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x53/0x70 print_report+0xce/0x640 kasan_report+0xb8/0xf0 cifs_fill_dirent+0xb03/0xb60 [cifs] cifs_readdir+0x12cb/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f996f64b9f9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 0d f7 c3 0c 00 f7 d8 64 89 8 RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88 R13: 0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000 </TASK>

Allocated by task 408: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x6e/0x70 kmem_cache_alloc_noprof+0x117/0x3d0 mempool_alloc_noprof+0xf2/0x2c0 cifs_buf_get+0x36/0x80 [cifs] allocate_buffers+0x1d2/0x330 [cifs] cifs_demultiplex_thread+0x22b/0x2690 [cifs] kthread+0x394/0x720 ret_from_fork+0x34/0x70 ret_from_fork_asm+0x1a/0x30

Freed by task 342979: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x37/0x50 kmem_cache_free+0x2b8/0x500 cifs_buf_release+0x3c/0x70 [cifs] cifs_readdir+0x1c97/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents64+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e

The buggy address belongs to the object at ffff8880099b8000 which belongs to the cache cifs_request of size 16588 The buggy address is located 412 bytes inside of freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc)

The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x80000000000040(head|node=0|zone=1) page_type: f5(slab) raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected

Memory state around the buggy address: ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880099b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880099b8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================

POC is available in the link [1].

The problem triggering process is as follows:

Process 1 Process 2 ----------------------------------- ---truncated---

Patch / fix

  • Linux Linux 2.6.28, 5.4.294, 5.10.238, 5.15.185, 6.1.141, 6.6.93, 6.12.31, 6.14.9, 6.15
  • linux Debian 12 6.1.147-1
  • linux Debian 14, Debian 13 6.12.32-1

debian advisories DEBIAN-CVE-2025-38051

  • linux Ubuntu 22.04 LTS 5.15.0-152.162
  • linux Ubuntu 24.04 LTS 6.8.0-100.100
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1090.97
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1046.49
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1090.99
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1047.50
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1087.93
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1043.48

ubuntu advisories UBUNTU-CVE-2025-38051

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-rt RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.94.1.rt7.435.el8_10

red hat advisories RHSA-2026:2761RHSA-2026:2583RHSA-2026:2560RHSA-2026:2352RHSA-2026:1879RHSA-2026:1495

  • kernel-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.49.1
  • kernel-syms-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.49.1
  • kernel-rt_debug Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.49.1
  • kernel-source-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.49.1
  • kernel-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.20.11.1
  • kernel-syms-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.20.11.1
  • kernel-source-azure SLE Module for Public Cloud 15 SP7 6.4.0-150700.20.11.1
  • kernel-64kb SLE Module for Basesystem 15 SP7 6.4.0-150700.53.11.1

suse advisories SUSE-SU-2025:03023-1SUSE-SU-2025:03011-1SUSE-SU-2025:02997-1SUSE-SU-2025:02996-1SUSE-SU-2025:20586-1SUSE-SU-2025:20602-1

  • kernel AlmaLinux 8 4.18.0-553.94.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.94.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.94.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.94.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.94.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.94.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.94.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.94.1.el8_10

almalinux advisories ALSA-2026:0759ALSA-2026:0760

  • kernel-rt Rocky Linux 8 4.18.0-553.94.1.rt7.435.el8_10
  • kernel Rocky Linux 8 4.18.0-553.94.1.el8_10

rocky linux advisories RLSA-2026:0760RLSA-2026:0759

  • kernel Azure Linux 3.0 6.6.96.1-1

azure linux advisories AZL-64061

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

Is CVE-2025-38051 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2025-38051 updated cvss 7.0

kernel: smb: client: Fix use-after-free in cifs_fill_dirent

  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernel
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.109.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.109.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.109.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.109.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.109.1.el9_4
    fixed: vendor fix RHSA-2026:1879
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.86.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.86.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.86.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.86.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.86.1.el9_6
    fixed: vendor fix RHSA-2026:2352
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.163.1.el9_0, kernel-devel-matched 5.14.0-70.163.1.el9_0, kernel-debug-devel-matched 5.14.0-70.163.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.163.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.163.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.163.1.el9_0, +2 more
    fixed: vendor fix RHSA-2026:1494
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.156.1.el9_2, rtla 5.14.0-284.156.1.el9_2, kernel-devel-matched 5.14.0-284.156.1.el9_2, kernel-64k-devel-matched 5.14.0-284.156.1.el9_2, kernel-debug-devel-matched 5.14.0-284.156.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.156.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:2560
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.60.1.el10_0, perf 6.12.0-55.60.1.el10_0, rtla 6.12.0-55.60.1.el10_0, python3-perf 6.12.0-55.60.1.el10_0, kernel-devel-matched 6.12.0-55.60.1.el10_0, kernel-64k-devel-matched 6.12.0-55.60.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:2761
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.109.1.el9_4, perf 5.14.0-427.109.1.el9_4, rtla 5.14.0-427.109.1.el9_4, kernel-devel-matched 5.14.0-427.109.1.el9_4, kernel-64k-devel-matched 5.14.0-427.109.1.el9_4, kernel-debug-devel-matched 5.14.0-427.109.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:1879
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.86.1.el9_6, perf 5.14.0-570.86.1.el9_6, rtla 5.14.0-570.86.1.el9_6, python3-perf 5.14.0-570.86.1.el9_6, kernel-devel-matched 5.14.0-570.86.1.el9_6, kernel-64k-devel-matched 5.14.0-570.86.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:2352
show 27 more
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.94.1.el8_10, kernel 4.18.0-553.94.1.el8_10, bpftool 4.18.0-553.94.1.el8_10, kernel-core 4.18.0-553.94.1.el8_10, kernel-tools 4.18.0-553.94.1.el8_10, python3-perf 4.18.0-553.94.1.el8_10, +11 more
    fixed: vendor fix RHSA-2026:0759
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.181.1.el8_2, kernel 4.18.0-193.181.1.el8_2, bpftool 4.18.0-193.181.1.el8_2, kernel-core 4.18.0-193.181.1.el8_2, kernel-tools 4.18.0-193.181.1.el8_2, python3-perf 4.18.0-193.181.1.el8_2, +8 more
    fixed: vendor fix RHSA-2026:0643
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.183.1.el8_4, kernel 4.18.0-305.183.1.el8_4, bpftool 4.18.0-305.183.1.el8_4, kernel-core 4.18.0-305.183.1.el8_4, kernel-tools 4.18.0-305.183.1.el8_4, python3-perf 4.18.0-305.183.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:0533
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.175.1.el8_6, kernel 4.18.0-372.175.1.el8_6, bpftool 4.18.0-372.175.1.el8_6, kernel-core 4.18.0-372.175.1.el8_6, kernel-tools 4.18.0-372.175.1.el8_6, python3-perf 4.18.0-372.175.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.175.1.el8_6, kernel 4.18.0-372.175.1.el8_6, bpftool 4.18.0-372.175.1.el8_6, kernel-core 4.18.0-372.175.1.el8_6, kernel-tools 4.18.0-372.175.1.el8_6, python3-perf 4.18.0-372.175.1.el8_6, +15 more
    fixed: vendor fix RHSA-2026:0536
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.126.1.el8_8, kernel 4.18.0-477.126.1.el8_8, bpftool 4.18.0-477.126.1.el8_8, kernel-core 4.18.0-477.126.1.el8_8, kernel-tools 4.18.0-477.126.1.el8_8, python3-perf 4.18.0-477.126.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:1445
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.163.1.el9_0, bpftool 5.14.0-70.163.1.el9_0, kernel-core 5.14.0-70.163.1.el9_0, kernel-tools 5.14.0-70.163.1.el9_0, python3-perf 5.14.0-70.163.1.el9_0, kernel-modules 5.14.0-70.163.1.el9_0, +14 more
    fixed: vendor fix RHSA-2026:1494
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.156.1.el9_2, kernel 5.14.0-284.156.1.el9_2, kernel-64k 5.14.0-284.156.1.el9_2, kernel-core 5.14.0-284.156.1.el9_2, kernel-tools 5.14.0-284.156.1.el9_2, python3-perf 5.14.0-284.156.1.el9_2, +28 more
    fixed: vendor fix RHSA-2026:2560
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.60.1.el10_0, kernel-64k 6.12.0-55.60.1.el10_0, kernel-core 6.12.0-55.60.1.el10_0, kernel-tools 6.12.0-55.60.1.el10_0, kernel-modules 6.12.0-55.60.1.el10_0, kernel-64k-core 6.12.0-55.60.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:2761
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.109.1.el9_4, kernel 5.14.0-427.109.1.el9_4, kernel-64k 5.14.0-427.109.1.el9_4, kernel-core 5.14.0-427.109.1.el9_4, kernel-tools 5.14.0-427.109.1.el9_4, python3-perf 5.14.0-427.109.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:1879
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.86.1.el9_6, kernel-64k 5.14.0-570.86.1.el9_6, kernel-core 5.14.0-570.86.1.el9_6, kernel-tools 5.14.0-570.86.1.el9_6, kernel-modules 5.14.0-570.86.1.el9_6, kernel-64k-core 5.14.0-570.86.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:2352
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.183.1.el8_4, kernel 4.18.0-305.183.1.el8_4, bpftool 4.18.0-305.183.1.el8_4, kernel-core 4.18.0-305.183.1.el8_4, kernel-tools 4.18.0-305.183.1.el8_4, python3-perf 4.18.0-305.183.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:0533
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.175.1.el8_6, kernel 4.18.0-372.175.1.el8_6, bpftool 4.18.0-372.175.1.el8_6, kernel-core 4.18.0-372.175.1.el8_6, kernel-tools 4.18.0-372.175.1.el8_6, python3-perf 4.18.0-372.175.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:0536
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.126.1.el8_8, kernel 4.18.0-477.126.1.el8_8, bpftool 4.18.0-477.126.1.el8_8, kernel-core 4.18.0-477.126.1.el8_8, kernel-tools 4.18.0-477.126.1.el8_8, python3-perf 4.18.0-477.126.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:1445
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.60.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.60.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.60.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.60.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.60.1.el10_0
    fixed: vendor fix RHSA-2026:2761
  • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel 4.18.0-553.94.1.el8_10
    fixed: vendor fix RHSA-2026:0759
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-kvm 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-core 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-modules 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-debug-kvm 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-debug-core 4.18.0-553.94.1.rt7.435.el8_10, +4 more
    fixed: vendor fix RHSA-2026:0760
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-kvm 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-core 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-modules 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-kvm 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-core 5.14.0-70.163.1.rt21.235.el9_0, +4 more Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-core 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-modules 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-core 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-modules 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-modules-extra 5.14.0-70.163.1.rt21.235.el9_0, +2 more
    fixed: vendor fix RHSA-2026:1495
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-core 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-modules 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-debug-core 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-modules-core 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-debug-modules 5.14.0-284.156.1.rt14.441.el9_2, +4 more
    fixed: vendor fix RHSA-2026:2583
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.60.1.el10_0, kernel-rt-64k 6.12.0-55.60.1.el10_0, kernel-rt-core 6.12.0-55.60.1.el10_0, kernel-rt-modules 6.12.0-55.60.1.el10_0, kernel-rt-64k-core 6.12.0-55.60.1.el10_0, kernel-rt-debug-core 6.12.0-55.60.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:2761
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.109.1.el9_4, kernel-rt-core 5.14.0-427.109.1.el9_4, kernel-rt-modules 5.14.0-427.109.1.el9_4, kernel-rt-debug-core 5.14.0-427.109.1.el9_4, kernel-rt-modules-core 5.14.0-427.109.1.el9_4, kernel-rt-debug-modules 5.14.0-427.109.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:1879
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.86.1.el9_6, kernel-rt-64k 5.14.0-570.86.1.el9_6, kernel-rt-core 5.14.0-570.86.1.el9_6, kernel-rt-modules 5.14.0-570.86.1.el9_6, kernel-rt-64k-core 5.14.0-570.86.1.el9_6, kernel-rt-debug-core 5.14.0-570.86.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:2352
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-kvm 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-core 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-modules 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-debug-kvm 5.14.0-284.156.1.rt14.441.el9_2, kernel-rt-debug-core 5.14.0-284.156.1.rt14.441.el9_2, +6 more
    fixed: vendor fix RHSA-2026:2583
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.60.1.el10_0, kernel-rt-kvm 6.12.0-55.60.1.el10_0, kernel-rt-core 6.12.0-55.60.1.el10_0, kernel-rt-modules 6.12.0-55.60.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.60.1.el10_0, kernel-rt-debug-core 6.12.0-55.60.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:2761
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.109.1.el9_4, kernel-rt-kvm 5.14.0-427.109.1.el9_4, kernel-rt-core 5.14.0-427.109.1.el9_4, kernel-rt-modules 5.14.0-427.109.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.109.1.el9_4, kernel-rt-debug-core 5.14.0-427.109.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:1879
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.86.1.el9_6, kernel-rt-kvm 5.14.0-570.86.1.el9_6, kernel-rt-core 5.14.0-570.86.1.el9_6, kernel-rt-modules 5.14.0-570.86.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.86.1.el9_6, kernel-rt-debug-core 5.14.0-570.86.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:2352
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-core 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-modules 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-debug-core 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-debug-modules 4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-modules-extra 4.18.0-553.94.1.rt7.435.el8_10, +2 more
    fixed: vendor fix RHSA-2026:0760
  • 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 Red Hat Enterprise Linux BaseOS (v. 8) kernel-debuginfo-common-s390x 4.18.0-553.94.1.el8_10, kernel-debuginfo-common-x86_64 4.18.0-553.94.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.94.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.94.1.el8_10
    not affected: vulnerable code not present

3 more not affected in the full advisory

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
total
Assessed
4mo ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).

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
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel 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.