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.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-31746 https://nvd.nist.gov/vuln/detail/CVE-2026-31746 https://lore.kernel.org/linux-cve-announce/2026050141-CVE-2026-31746-82d7@gregkh/T