CVE-2026-93075
kernel: dax/fsdev: clear pgmap ops and owner on unbind
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's dax/fsdev component. When a static device is unbound, the pgmap operations and owner are not properly cleared. This can lead to a use-after-free vulnerability where a subsequent memory failure event might dispatch through a stale or freed handler, potentially causing a system crash or other unpredictable behavior.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference