CVE-2026-97591

A flaw was found in the Linux kernel's s390 crypto subsystem. When processing Protected Key HMAC PHMAC operations, the driver improperly treats busy queue status codes from the cryptographic engine as failure conditions. A local user could exploit this flaw by submitting cryptographic requests...

PT-2026-98528

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390 crypto subsystem where the hardware may persistently return an -EBUSY error after exhausting retries. This error propagates to the crypto finalize request...

PT-2026-98531

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390 crypto subsystem regarding the handling of the EBUSY return code within PHMAC. When a request is transferred to the crypto engine via the crypto transfer hash...