NULL pointer dereference in Linux kernel - CVE-2026-97439
Published: September 24, 2026
Vulnerability identifier: #VU152023
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-97439
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the ntfs3 extended attribute handler when modifying system.ntfs_attrib and system.dos_attrib on the same file in a corrupted ntfs3 image. A local user can toggle system.ntfs_attrib, overwrite system.dos_attrib, and write to the file to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-97439
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3