CVE-2026-31746

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

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 1, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's s390/zcrypt component. When Common Cryptographic Architecture (CCA) cards are used as accelerators for clear key RSA requests, a memory leak occurs due to an unreleased memory allocation. Over time, this memory leak can lead to a denial of service (DoS) condition, impacting system stability and availability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-772 · Missing Release of Resource after Effective Lifetime