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Fencer Vulns
critical 9.8

CVE-2025-38527 in the critical feed json

smb: client: fix use-after-free in cifs_oplock_break

published 2025-08-16 14 mo ago modified 2026-10-15 24 d ago also EUVD-2025-26114

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

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

smb: client: fix use-after-free in cifs_oplock_break

A race condition can occur in cifs_oplock_break() leading to a use-after-free of the cinode structure when unmounting:

cifs_oplock_break() _cifsFileInfo_put(cfile) cifsFileInfo_put_final() cifs_sb_deactive() [last ref, start releasing sb] kill_sb() kill_anon_super() generic_shutdown_super() evict_inodes() dispose_list() evict() destroy_inode() call_rcu(&inode->i_rcu, i_callback) spin_lock(&cinode->open_file_lock) <- OK [later] i_callback() cifs_free_inode() kmem_cache_free(cinode) spin_unlock(&cinode->open_file_lock) <- UAF cifs_done_oplock_break(cinode) <- UAF

The issue occurs when umount has already released its reference to the superblock. When _cifsFileInfo_put() calls cifs_sb_deactive(), this releases the last reference, triggering the immediate cleanup of all inodes under RCU. However, cifs_oplock_break() continues to access the cinode after this point, resulting in use-after-free.

Fix this by holding an extra reference to the superblock during the entire oplock break operation. This ensures that the superblock and its inodes remain valid until the oplock break completes.

Patch / fix

  • Linux Linux 3.17, 4.10, 4.15, 4.20, 5.1, 5.15.190, 6.1.147, 6.6.100, 6.12.40, 6.15.8, 6.16
  • linux Debian 12 6.1.147-1
  • linux Debian 13 6.12.41-1
  • linux Debian 14 6.16.3-1

debian advisories DEBIAN-CVE-2025-38527

  • linux Ubuntu 22.04 LTS 5.15.0-163.173
  • linux Ubuntu 24.04 LTS 6.8.0-100.100
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1097.104
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1046.49
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1097.106
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1047.50
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1093.99
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1043.48

ubuntu advisories UBUNTU-CVE-2025-38527

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 5.14.0-611.5.1.el9_7
  • rv RHEL 9 5.14.0-611.5.1.el9_7
  • perf RHEL 9 5.14.0-611.5.1.el9_7
  • rtla RHEL 9 5.14.0-611.5.1.el9_7
  • libperf RHEL 9 5.14.0-611.5.1.el9_7
  • kernel-rt RHEL 9 5.14.0-611.5.1.el9_7
  • kernel-64k RHEL 9 5.14.0-611.5.1.el9_7
  • kernel-core RHEL 9 5.14.0-611.5.1.el9_7

red hat advisories RHSA-2025:22752RHSA-2025:21667RHSA-2025:20518RHSA-2025:18098RHSA-2025:18054RHSA-2025:17570

  • kernel-rt Linux Micro 6.2 6.12.0-160000.6.1
  • kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
  • kernel-source SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
  • kernel-default SLES 16.0, SLE High Availability Extension 16.0, Linux Micro 6.2 +1 more 6.12.0-160000.6.1
  • kernel-default-base SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1.160000.2.4
  • kernel-syms SLES 16.0, Linux Micro Extras 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
  • kernel-obs-qa SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.6.1
  • kernel-kvmsmall SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.6.1

suse advisories SUSE-SU-2025:21074-1SUSE-SU-2025:21139-1SUSE-SU-2026:20560-1SUSE-SU-2025:21179-1SUSE-SU-2025:20870-1SUSE-SU-2025:20898-1

  • kernel-rt openSUSE Leap 16.0 6.12.0-160000.6.1
  • dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-64kb openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-syms openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-source openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-default openSUSE Leap 16.0 6.12.0-160000.6.1
  • kernel-kvmsmall openSUSE Leap 16.0 6.12.0-160000.6.1

opensuse advisories openSUSE-SU-2025:20081-1

  • kernel AlmaLinux 8 4.18.0-553.78.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.78.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.78.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.78.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.78.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.78.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.78.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.78.1.el8_10

almalinux advisories ALSA-2025:17397ALSA-2025:17398ALSA-2025:16880ALSA-2025:16904

  • kernel Rocky Linux 9 5.14.0-570.49.1.el9_6
  • kernel Rocky Linux 10 6.12.0-55.37.1.el10_0

rocky linux advisories RLSA-2025:16880RLSA-2025:16904

  • kernel Azure Linux 3.0 6.6.104.2-1
  • kernel CBL-Mariner 2.0 5.15.200.1-1

azure linux advisories AZL-66401AZL-73554

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-2025-38527 updated cvss 7.0

kernel: smb: client: fix use-after-free in cifs_oplock_break

  • 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.9.4) libperf 5.14.0-427.92.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.92.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.92.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.92.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.92.1.el9_4
    fixed: vendor fix RHSA-2025:17241
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.5.1.el9_7, rv 5.14.0-570.49.1.el9_6, perf 5.14.0-611.5.1.el9_7, rtla 5.14.0-611.5.1.el9_7, perf 5.14.0-570.49.1.el9_6, rtla 5.14.0-570.49.1.el9_6, +20 more
    fixed: vendor fix RHSA-2025:16880
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-55.37.1.el10_0, perf 6.12.0-55.37.1.el10_0, rtla 6.12.0-55.37.1.el10_0, python3-perf 6.12.0-55.37.1.el10_0, kernel-devel-matched 6.12.0-55.37.1.el10_0, kernel-64k-devel-matched 6.12.0-55.37.1.el10_0, +7 more
    fixed: vendor fix RHSA-2025:16904
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.149.1.el9_0, kernel-devel-matched 5.14.0-70.149.1.el9_0, kernel-debug-devel-matched 5.14.0-70.149.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.149.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.149.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.149.1.el9_0, +2 more
    fixed: vendor fix RHSA-2025:18054
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.140.1.el9_2, rtla 5.14.0-284.140.1.el9_2, kernel-devel-matched 5.14.0-284.140.1.el9_2, kernel-64k-devel-matched 5.14.0-284.140.1.el9_2, kernel-debug-devel-matched 5.14.0-284.140.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.140.1.el9_2, +5 more
    fixed: vendor fix RHSA-2025:17122
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.92.1.el9_4, perf 5.14.0-427.92.1.el9_4, rtla 5.14.0-427.92.1.el9_4, kernel-devel-matched 5.14.0-427.92.1.el9_4, kernel-64k-devel-matched 5.14.0-427.92.1.el9_4, kernel-debug-devel-matched 5.14.0-427.92.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:17241
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.78.1.el8_10, kernel 4.18.0-553.78.1.el8_10, bpftool 4.18.0-553.78.1.el8_10, kernel-core 4.18.0-553.78.1.el8_10, kernel-tools 4.18.0-553.78.1.el8_10, python3-perf 4.18.0-553.78.1.el8_10, +15 more
    fixed: vendor fix RHSA-2025:17397
show 28 more
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.5.1.el9_7, kernel 5.14.0-570.49.1.el9_6, kernel-64k 5.14.0-611.5.1.el9_7, kernel-64k 5.14.0-570.49.1.el9_6, kernel-core 5.14.0-611.5.1.el9_7, kernel-core 5.14.0-570.49.1.el9_6, +60 more
    fixed: vendor fix RHSA-2025:16880
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-55.37.1.el10_0, kernel-64k 6.12.0-55.37.1.el10_0, kernel-core 6.12.0-55.37.1.el10_0, kernel-tools 6.12.0-55.37.1.el10_0, kernel-modules 6.12.0-55.37.1.el10_0, kernel-64k-core 6.12.0-55.37.1.el10_0, +27 more
    fixed: vendor fix RHSA-2025:16904
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.173.1.el8_2, kernel 4.18.0-193.173.1.el8_2, bpftool 4.18.0-193.173.1.el8_2, kernel-core 4.18.0-193.173.1.el8_2, kernel-tools 4.18.0-193.173.1.el8_2, python3-perf 4.18.0-193.173.1.el8_2, +8 more
    fixed: vendor fix RHSA-2025:21667
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.179.1.el8_4, kernel 4.18.0-305.179.1.el8_4, bpftool 4.18.0-305.179.1.el8_4, kernel-core 4.18.0-305.179.1.el8_4, kernel-tools 4.18.0-305.179.1.el8_4, python3-perf 4.18.0-305.179.1.el8_4, +8 more
    fixed: vendor fix RHSA-2025:22752
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.162.1.el8_6, kernel 4.18.0-372.162.1.el8_6, bpftool 4.18.0-372.162.1.el8_6, kernel-core 4.18.0-372.162.1.el8_6, kernel-tools 4.18.0-372.162.1.el8_6, python3-perf 4.18.0-372.162.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.162.1.el8_6, kernel 4.18.0-372.162.1.el8_6, bpftool 4.18.0-372.162.1.el8_6, kernel-core 4.18.0-372.162.1.el8_6, kernel-tools 4.18.0-372.162.1.el8_6, python3-perf 4.18.0-372.162.1.el8_6, +15 more
    fixed: vendor fix RHSA-2025:17124
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.114.1.el8_8, kernel 4.18.0-477.114.1.el8_8, bpftool 4.18.0-477.114.1.el8_8, kernel-core 4.18.0-477.114.1.el8_8, kernel-tools 4.18.0-477.114.1.el8_8, python3-perf 4.18.0-477.114.1.el8_8, +9 more
    fixed: vendor fix RHSA-2025:17570
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.149.1.el9_0, bpftool 5.14.0-70.149.1.el9_0, kernel-core 5.14.0-70.149.1.el9_0, kernel-tools 5.14.0-70.149.1.el9_0, python3-perf 5.14.0-70.149.1.el9_0, kernel-modules 5.14.0-70.149.1.el9_0, +14 more
    fixed: vendor fix RHSA-2025:18054
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.140.1.el9_2, kernel 5.14.0-284.140.1.el9_2, kernel-64k 5.14.0-284.140.1.el9_2, kernel-core 5.14.0-284.140.1.el9_2, kernel-tools 5.14.0-284.140.1.el9_2, python3-perf 5.14.0-284.140.1.el9_2, +28 more
    fixed: vendor fix RHSA-2025:17122
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.92.1.el9_4, kernel 5.14.0-427.92.1.el9_4, kernel-64k 5.14.0-427.92.1.el9_4, kernel-core 5.14.0-427.92.1.el9_4, kernel-tools 5.14.0-427.92.1.el9_4, python3-perf 5.14.0-427.92.1.el9_4, +28 more
    fixed: vendor fix RHSA-2025:17241
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.179.1.el8_4, kernel 4.18.0-305.179.1.el8_4, bpftool 4.18.0-305.179.1.el8_4, kernel-core 4.18.0-305.179.1.el8_4, kernel-tools 4.18.0-305.179.1.el8_4, python3-perf 4.18.0-305.179.1.el8_4, +8 more
    fixed: vendor fix RHSA-2025:22752
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.162.1.el8_6, kernel 4.18.0-372.162.1.el8_6, bpftool 4.18.0-372.162.1.el8_6, kernel-core 4.18.0-372.162.1.el8_6, kernel-tools 4.18.0-372.162.1.el8_6, python3-perf 4.18.0-372.162.1.el8_6, +8 more
    fixed: vendor fix RHSA-2025:17124
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.114.1.el8_8, kernel 4.18.0-477.114.1.el8_8, bpftool 4.18.0-477.114.1.el8_8, kernel-core 4.18.0-477.114.1.el8_8, kernel-tools 4.18.0-477.114.1.el8_8, python3-perf 4.18.0-477.114.1.el8_8, +8 more
    fixed: vendor fix RHSA-2025:17570
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.5.1.el9_7, libperf 5.14.0-570.49.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-611.5.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-570.49.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-611.5.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.5.1.el9_7, +4 more
    fixed: vendor fix RHSA-2025:16880
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-55.37.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.37.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.37.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.37.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.37.1.el10_0
    fixed: vendor fix RHSA-2025:16904
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.78.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.78.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.78.1.el8_10
    fixed: vendor fix RHSA-2025:17397
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-kvm 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-core 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-modules 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-debug-kvm 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-debug-core 4.18.0-553.78.1.rt7.419.el8_10, +4 more
    fixed: vendor fix RHSA-2025:17398
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-kvm 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-core 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-modules 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-debug-kvm 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-debug-core 5.14.0-70.149.1.rt21.221.el9_0, +4 more
    fixed: vendor fix RHSA-2025:18098
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.5.1.el9_7, kernel-rt 5.14.0-570.49.1.el9_6, kernel-rt-64k 5.14.0-611.5.1.el9_7, kernel-rt-64k 5.14.0-570.49.1.el9_6, kernel-rt-core 5.14.0-611.5.1.el9_7, kernel-rt-core 5.14.0-570.49.1.el9_6, +34 more
    fixed: vendor fix RHSA-2025:16880
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-55.37.1.el10_0, kernel-rt-64k 6.12.0-55.37.1.el10_0, kernel-rt-core 6.12.0-55.37.1.el10_0, kernel-rt-modules 6.12.0-55.37.1.el10_0, kernel-rt-64k-core 6.12.0-55.37.1.el10_0, kernel-rt-debug-core 6.12.0-55.37.1.el10_0, +14 more
    fixed: vendor fix RHSA-2025:16904
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-core 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-modules 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-debug-core 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-debug-modules 5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-modules-extra 5.14.0-70.149.1.rt21.221.el9_0, +2 more
    fixed: vendor fix RHSA-2025:18098
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-core 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-modules 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-debug-core 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-modules-core 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-debug-modules 5.14.0-284.140.1.rt14.425.el9_2, +4 more
    fixed: vendor fix RHSA-2025:17123
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.92.1.el9_4, kernel-rt-core 5.14.0-427.92.1.el9_4, kernel-rt-modules 5.14.0-427.92.1.el9_4, kernel-rt-debug-core 5.14.0-427.92.1.el9_4, kernel-rt-modules-core 5.14.0-427.92.1.el9_4, kernel-rt-debug-modules 5.14.0-427.92.1.el9_4, +4 more
    fixed: vendor fix RHSA-2025:17241
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.5.1.el9_7, kernel-rt 5.14.0-570.49.1.el9_6, kernel-rt-core 5.14.0-611.5.1.el9_7, kernel-rt-kvm 5.14.0-570.49.1.el9_6, kernel-rt-core 5.14.0-570.49.1.el9_6, kernel-rt-modules 5.14.0-611.5.1.el9_7, +16 more
    fixed: vendor fix RHSA-2025:16880
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-55.37.1.el10_0, kernel-rt-kvm 6.12.0-55.37.1.el10_0, kernel-rt-core 6.12.0-55.37.1.el10_0, kernel-rt-modules 6.12.0-55.37.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.37.1.el10_0, kernel-rt-debug-core 6.12.0-55.37.1.el10_0, +6 more
    fixed: vendor fix RHSA-2025:16904
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-kvm 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-core 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-modules 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-debug-kvm 5.14.0-284.140.1.rt14.425.el9_2, kernel-rt-debug-core 5.14.0-284.140.1.rt14.425.el9_2, +6 more
    fixed: vendor fix RHSA-2025:17123
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.92.1.el9_4, kernel-rt-kvm 5.14.0-427.92.1.el9_4, kernel-rt-core 5.14.0-427.92.1.el9_4, kernel-rt-modules 5.14.0-427.92.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.92.1.el9_4, kernel-rt-debug-core 5.14.0-427.92.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:17241
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-core 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-modules 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-debug-core 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-debug-modules 4.18.0-553.78.1.rt7.419.el8_10, kernel-rt-modules-extra 4.18.0-553.78.1.rt7.419.el8_10, +2 more
    fixed: vendor fix RHSA-2025:17398
  • 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
yes
Technical impact
total
Assessed
24 d ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 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

Weakness
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.