CVE-2025-68310

kernel: Linux kernel: Denial of Service due to deadlock in PCI error recovery

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · December 16, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel. A local user could trigger a deadlock between the PCI (Peripheral Component Interconnect) error recovery mechanism and the mlx5 crdump functionality. This occurs due to an incorrect lock acquisition during PCI error recovery on s390 systems. The deadlock causes system tasks to become unresponsive, leading to a Denial of Service (DoS).

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-833 · Deadlock