CVE-2026-90304

kernel: ARM: 9484/1: enable interrupts when unhandled user faults are triggered

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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 14, 2026

Description

A flaw was found in the Linux kernel. When unhandled user faults are triggered, specifically by user programs executing the bkpt instruction with CONFIG_PERF_EVENTS=n disabled, the system attempts to send a signal with interrupts disabled. This can lead to system instability or a denial of service (DoS) condition.

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-364 · Signal Handler Race Condition