CVE-2026-31544
kernel: firmware: arm_scmi: Fix NULL dereference on notify error path
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 24, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's arm_scmi firmware component. The __scmi_event_handler_get_ops helper function can return a NULL pointer when an event handler is not found or created, instead of an expected error pointer. This improper handling of the error path leads to a NULL dereference vulnerability. Exploitation of this flaw can cause a system crash, resulting in 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-476 · NULL Pointer Dereference