Race condition in Linux kernel - CVE-2026-93798
Published: September 25, 2026
Vulnerability identifier: #VU152097
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93798
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause inconsistent relocation-root state.
The vulnerability exists due to improper synchronization in merge_reloc_roots() when merging relocation roots. A local user can trigger relocation-root cleanup to cause inconsistent relocation-root state.
The issue occurs when a root has zero root references in its root item.
Affected software
Linux kernel
How to mitigate CVE-2026-93798
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3