CVE-2024-26957

kernel: s390/zcrypt: fix reference counting on zcrypt card objects

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 1, 2024

Updated · August 18, 2026

Description

A flaw was found in the s390/zcrypt component of the Linux kernel. An incorrect handling of reference counting on zcrypt card objects can lead to a use-after-free vulnerability. A local attacker could exploit this to cause a denial of service (DoS) or potentially achieve privilege escalation.

Statement

No Red Hat products are affected.

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-911 · Improper Update of Reference Count