Use-after-free in Linux kernel - CVE-2026-93106
Published: September 18, 2026
Vulnerability identifier: #VU150912
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93106
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a use-after-free condition.
The vulnerability exists due to improper reference counting in restore_dm_crypt_keys_to_thread_keyring() when restoring more than five saved dm-crypt keys. A local user can cause multiple saved dm-crypt keys to be restored during crash dump processing to cause a use-after-free condition.
Affected software
Linux kernel
How to mitigate CVE-2026-93106
Install security update from vendor's repository.