Race condition in Linux kernel - CVE-2025-10263

 

Race condition in Linux kernel - CVE-2025-10263

Published: July 14, 2026


Vulnerability identifier: #VU137404
CSH Severity: Low
CVSS v4 BT: 4.3 [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/E:U/U:Clear]
CVE-ID: CVE-2025-10263
CWE-ID: CWE-362
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 synchronization in broadcast TLB invalidation completion handling in the arm64 CPU errata logic when performing memory accesses translated by an invalidated TLB entry after a TLBI;DSB sequence. A local user can trigger affected memory access patterns to cause a denial of service.

The issue affects certain Arm CPUs on arm64 systems and does not prevent invalidation of TLB entries themselves.


Affected software

Linux kernel
Red Hat Enterprise Linux Server - AUS
openEuler
Fedora
kernel (Red Hat package)
xen
kernel-tools
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
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
kernel (Red Hat package) - addressed in versions 4.18.0-305.200.1.el8_4, 4.18.0-372.204.1.el8_6
xen - update to 4.20.4-1.fc43
Red Hat OpenShift Container Platform - update to 4.22.6
kernel-tools - update to 6.6.0-145.1.19.156
python3-perf-debuginfo - update to 6.6.0-145.1.19.156
python3-perf - update to 6.6.0-145.1.19.156
perf-debuginfo - update to 6.6.0-145.1.19.156
perf - update to 6.6.0-145.1.19.156
kernel-tools-devel - update to 6.6.0-145.1.19.156
kernel-tools-debuginfo - update to 6.6.0-145.1.19.156
kernel-source - update to 6.6.0-145.1.19.156
kernel-headers - update to 6.6.0-145.1.19.156
kernel-devel - update to 6.6.0-145.1.19.156
kernel-debugsource - update to 6.6.0-145.1.19.156
kernel-debuginfo - update to 6.6.0-145.1.19.156
bpftool-debuginfo - update to 6.6.0-145.1.19.156
bpftool - update to 6.6.0-145.1.19.156
kernel - update to 6.6.0-145.1.19.156

External References

Related Security Bulletins