Improper locking in Linux kernel - CVE-2025-10263

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Main Vulnerability Database Vulnerabilities #VU137322

Improper locking in Linux kernel - CVE-2025-10263

Published: July 11, 2026


Vulnerability identifier: #VU137322
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-10263
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper hardware synchronization in arm64 TLB invalidation handling when processing broadcast TLB invalidation sequences on affected Arm CPUs. A local user can trigger memory accesses that rely on an invalidated TLB entry to cause a denial of service.

The issue affects only the completion of memory accesses translated by an invalidated TLB entry and does not affect the actual invalidation of TLB entries.


Affected software

Linux kernel
Debian Linux
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
openEuler
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel (Red Hat package)
kernel
kernel-doc
kernel-abi-stablelists
python3-perf
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-tools
kernel-modules
bpftool
kernel-core
kernel-cross-headers
kernel-debug
kernel-debug-core
kernel-debug-modules
kernel-modules-extra
kernel-headers
kernel-devel
kernel-debug-modules-extra
kernel-debug-devel
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-source
kernel-tools-debuginfo
kernel-tools-devel
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf-debuginfo
xen (Debian package)
xen
kernel-rt (Red Hat package)
Red Hat OpenShift Container Platform

How to mitigate CVE-2025-10263

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
Red Hat OpenShift Container Platform - addressed in versions 4.12.96, 4.18.53, 4.22.6
kernel (Red Hat package) - addressed in versions 4.18.0-305.200.1.el8_4, 4.18.0-372.204.1.el8_6, 4.18.0-477.158.1.el8_8, 5.14.0-284.186.1.el9_2, 5.14.0-427.143.1.el9_4, 5.14.0-570.131.1.el9_6
kernel - update to 4.18.0-553.141.1.0.1
kernel-doc - update to 4.18.0-553.141.1.0.1
kernel-abi-stablelists - update to 4.18.0-553.141.1.0.1
python3-perf - update to 4.18.0-553.141.1.0.1
perf - update to 4.18.0-553.141.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.141.1.0.1
kernel-tools-libs - update to 4.18.0-553.141.1.0.1
kernel-tools - update to 4.18.0-553.141.1.0.1
kernel-modules - update to 4.18.0-553.141.1.0.1
bpftool - update to 4.18.0-553.141.1.0.1
kernel-core - update to 4.18.0-553.141.1.0.1
kernel-cross-headers - update to 4.18.0-553.141.1.0.1
kernel-debug - update to 4.18.0-553.141.1.0.1
kernel-debug-core - update to 4.18.0-553.141.1.0.1
kernel-debug-modules - update to 4.18.0-553.141.1.0.1
kernel-modules-extra - update to 4.18.0-553.141.1.0.1
kernel-headers - update to 4.18.0-553.141.1.0.1
kernel-devel - update to 4.18.0-553.141.1.0.1
kernel-debug-modules-extra - update to 4.18.0-553.141.1.0.1
kernel-debug-devel - update to 4.18.0-553.141.1.0.1
kernel-tools - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
bpftool - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
bpftool-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-debugsource - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-devel - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-source - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-tools-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-tools-devel - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
perf - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
perf-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
python2-perf - update to 4.19.90-2607.4.0.0382
python2-perf-debuginfo - update to 4.19.90-2607.4.0.0382
python3-perf - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
python3-perf-debuginfo - addressed in versions 4.19.90-2607.4.0.0382, 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
xen (Debian package) - update to 4.20.3+127-gc42374a105-0+deb13u1
xen - update to 4.20.4-1.fc43
kernel-headers - addressed in versions 5.10.0-326.0.0.227, 6.6.0-145.1.19.156
kernel-rt (Red Hat package) - update to 5.14.0-284.186.1.rt14.471.el9_2

External References

Related Security Bulletins