Unchecked Return Value in Linux kernel - CVE-2026-97489
Published: September 24, 2026
Vulnerability identifier: #VU151998
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-2026-97489
CWE-ID: CWE-252
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 an unchecked return value in the bfs filesystem superblock initialization routine when mounting a BFS file system on a block device with a block size greater than PAGE_SIZE. A local user can mount a BFS file system on such a block device to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-97489
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3