Improper locking in Linux kernel - CVE-2025-10263
Published: July 2, 2026
Vulnerability identifier: #VU136690
CSH Severity: Low
CVSS v4.0: 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-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper memory synchronization in broadcast TLB invalidation completion handling in the arm64 CPU errata logic when performing broadcast TLB invalidation on affected Arm CPUs. A local user can trigger memory access patterns that rely on invalidated TLB entries to cause a denial of service.
The issue affects only completion of memory accesses translated by an invalidated TLB entry and does not prevent the actual invalidation of TLB entries.
How to mitigate CVE-2025-10263
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/1268c64e2bcb6e968152990e87bd10c440fcc9c0
- https://git.kernel.org/stable/c/1b47b1e1d8675fdf5f6e11e7fa19c704d8c6f5cd
- https://git.kernel.org/stable/c/4e7c80742e6dada9f8b9ad63f3a49c03af07ecb8
- https://git.kernel.org/stable/c/7c3ad9365079e716b57d2363d3081ee7680cc18e
- https://git.kernel.org/stable/c/8364384ae82fbffdf8968abaac3455ed854da18d
- https://git.kernel.org/stable/c/925058203229403008d77a52b1e63e2ae5f4a3cf
- https://git.kernel.org/stable/c/cfd391e74134db664feb499d43af286380b10ba8
- https://git.kernel.org/stable/c/d4fd4282204044fdedd1e42abbe70a9206f74ec0
- https://git.kernel.org/stable/c/e717a4d08779f1a28d6e0275e75040b12c33c753