Type Confusion in Linux kernel - CVE-2026-93258
Published: September 25, 2026
Vulnerability identifier: #VU152141
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-93258
CWE-ID: CWE-843
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 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.
Affected software
Linux kernel
How to mitigate CVE-2026-93258
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3