Improper locking in Linux kernel - CVE-2025-10263
Published: July 18, 2026
Vulnerability identifier: #VU138387
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 disclose sensitive information, modify data, or cause a denial of service.
The vulnerability exists due to improper synchronization in broadcast TLB invalidation handling in the arm64 TLB invalidation logic when processing TLBI and DSB sequences on affected Arm CPUs. A local user can trigger memory accesses involving translations from an invalidated TLB entry to disclose sensitive information, modify data, or cause a denial of service.
The issue affects only the 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