CVE-2026-31746

MEDIUM

s390/zcrypt: Fix memory leak with CCA cards used as accelerator

Title source: cna
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix memory leak with CCA cards used as accelerator Tests showed that there is a memory leak if CCA cards are used as accelerator for clear key RSA requests (ME and CRT). With the last rework for the memory allocation the AP messages are allocated by ap_init_apmsg() but for some reason on two places (ME and CRT) the older allocation was still in place. So the first allocation simple was never freed.

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 2.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (10)
Linux/Linux < 6.16
Linux/Linux 57db62a130ce69e6f3a870cf1119d8f860391f97 - 586222c37d4027dbf60a604fbe820184fee7c1c9
Linux/Linux 57db62a130ce69e6f3a870cf1119d8f860391f97 - ace37bfec3822033e59fff390f2ff99fc96ebe4f
Linux/Linux 57db62a130ce69e6f3a870cf1119d8f860391f97 - c8d46f17c2fc7d25c18e60c008928aecab26184d
Linux/Linux 6.16
Linux/Linux 6.18.22 - 6.18.*
Linux/Linux 6.19.12 - 6.19.*
Linux/Linux 7.0
linux/linux_kernel 7.0 rc1 (6 CPE variants)
linux/linux_kernel 6.16 - 6.18.22
Published May 01, 2026
Tracked Since May 01, 2026