SB20260925117 - Type Confusion in Linux kernel ocfs2
Published: September 25, 2026
Security Bulletin ID
SB20260925117
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) Type Confusion (CVE-ID: CVE-2026-93258)
CWE-ID: CWE-843 - Type confusion
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/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 inode type handling in ocfs2_read_inode_block_full() when processing a directory inode during an active VFS lookup. A local user can trigger a lookup of a directory inode that fails validation to cause a denial of service.
VFS_BUG_ON_INODE() may be triggered when the inode type is reset to S_IFREG.
Remediation
Install update from vendor's website.