Improper locking in Linux kernel - CVE-2026-99102
Published: October 29, 2026
Vulnerability identifier: #VU158487
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-99102
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service in processes accessing NTFS files.
The vulnerability exists due to improper locking in the Linux kernel's ntfs_setattr_size() function when resizing files concurrently with page faults. A local user can race file resizing against page faults to expose transient runlist state, triggering a spurious SIGBUS that can terminate an affected process.
Affected software
Linux kernel
How to mitigate CVE-2026-99102
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3