Use-after-free in Linux kernel - CVE-2026-97594
Published: September 28, 2026
Vulnerability identifier: #VU152616
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97594
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to compromise confidentiality, integrity, and availability.
The vulnerability exists due to use-after-free in current_check_refer_path() in the Landlock filesystem access-control implementation when racing linkat(2) calls against concurrent rename(2) and rmdir(2) operations. A local user can race a linkat(2) loop against rename(2) and rmdir(2) to compromise confidentiality, integrity, and availability.
Exploitation requires entering a Landlock domain that handles at least one filesystem access right.
Affected software
Linux kernel
How to mitigate CVE-2026-97594
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3