CVE-2026-93081
kernel: firmware: arm_scmi: Fix SCMI device destroy lifetimes
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 ARM System Control and Management Interface (SCMI) firmware. This vulnerability occurs due to improper handling of device reference counts during the device destruction process. A concurrent unregister operation can release a device while its pointer is still in use, leading to a use-after-free condition. This can result in system instability or a denial of service (DoS).
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