CVE-2026-90271

kernel: arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's arm_mpam component. This vulnerability allows a local user to cause a system crash, leading to a Denial of Service (DoS). The issue arises when a user unbinds a Memory System Component (MSC) after an error interrupt, causing a NULL pointer dereference.

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference