CVE-2026-31481

kernel: tracing: Drain deferred trigger frees if kthread creation fails

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · April 22, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel. A local user can exploit this vulnerability by providing specific kernel command line parameters during boot, which can lead to a NULL pointer dereference. This issue occurs due to improper handling of deferred trigger frees when kernel thread (kthread) creation fails. Successful exploitation can cause the system to crash, resulting in a Denial of Service (DoS).

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-772 · Missing Release of Resource after Effective Lifetime