Race condition in Linux kernel - CVE-2026-92487
Published: September 18, 2026
Vulnerability identifier: #VU151037
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-92487
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause data corruption.
The vulnerability exists due to a race condition in exfat valid_size extension for shared writable memory mappings when a buffered write or page fault extends valid_size. A local user can race a store through a shared writable mapping with page-cache gap zeroing to cause data corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-92487
Install security update from vendor's repository.