Use-after-free in Linux kernel - CVE-2026-93075
Published: September 18, 2026
Vulnerability identifier: #VU150934
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93075
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 denial of service.
The vulnerability exists due to use-after-free in FS-DAX page-map operations when handling a memory failure after a static device is unbound from FS-DAX. A local user can trigger a memory failure after FS-DAX is detached to cause a denial of service.
The condition can occur if the device is rebound to device_dax or the fsdev_dax module is unloaded.
Affected software
Linux kernel
How to mitigate CVE-2026-93075
Install security update from vendor's repository.