SB20260816374 - Improper input validation in Linux kernel ocfs2
Published: August 16, 2026
Security Bulletin ID
SB20260816374
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper input validation (CVE-ID: CVE-2026-72160)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in ocfs2_validate_inode_block() and ocfs2_filecheck_validate_inode_block() when processing forged OCFS2 inode metadata. A local user can provide a crafted dinode with non-canonical i_mode type bits to cause a denial of service.
The issue affects the normal read path and the online filecheck read path.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/157d31ef45038d89cd19620105e082d43c8e41e0
- https://git.kernel.org/stable/c/2e3aac33988ef4e4170141db8e995693ea38357c
- https://git.kernel.org/stable/c/4db3b6a2a8ecf2a89d26a4090ace4072c6fad050
- https://git.kernel.org/stable/c/5366a017099c6a3c443be908a05f26fd72af12a1
- https://git.kernel.org/stable/c/82afe13558354390d8a592a5334d5f4fd72c0e5c
- https://git.kernel.org/stable/c/a5b555bcabbb0aff8745ad181768eaf9d964c1ee
- https://git.kernel.org/stable/c/b858f2d57cfc9d57ce61b86051d603dc0ebccd40
- https://git.kernel.org/stable/c/fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f