CVE-2026-53161

kernel: misc: fastrpc: fix use-after-free of fastrpc_user in workqueue context

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Severity

Moderate

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · June 25, 2026

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel's fastrpc module. A race condition between closing a file descriptor and processing Digital Signal Processor (DSP) responses can lead to a use-after-free vulnerability. This allows a local attacker to potentially cause a system crash or, in some cases, execute arbitrary code or escalate privileges.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-366 · Race Condition within a Thread