Race condition in Linux kernel - CVE-2026-90131
Published: September 19, 2026
Vulnerability identifier: #VU151355
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90131
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to observe torn NTFS attribute length and offset fields.
The vulnerability exists due to a race condition in ntfs_read_iomap_begin_resident() when processing mmap read faults for resident NTFS files concurrently with link or unlink operations. A local user can trigger concurrent mmap read faults and link or unlink operations to observe torn NTFS attribute length and offset fields.
Affected software
Linux kernel
How to mitigate CVE-2026-90131
Install security update from vendor's repository.