CVE-2026-23355

kernel: ata: libata: cancel pending work after clearing deferred_qc

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · March 25, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's libata subsystem. This vulnerability occurs due to improper handling of deferred work. When ap->deferred_qc is cleared, the associated queued work is not canceled, leading to the work being executed at an inappropriate time. This can result in a WARN_ON() condition, potentially causing system instability or a denial of service.

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-459 · Incomplete Cleanup