Double free in Linux kernel - CVE-2026-93810
Published: September 25, 2026
Vulnerability identifier: #VU152077
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93810
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a double free.
The vulnerability exists due to a double fput in error handling in cachefiles_create_tmpfile() when the cache does not support read_iter and write_iter. A local user can trigger this error-handling path to cause a double free.
Affected software
Linux kernel
How to mitigate CVE-2026-93810
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3