CVE-2026-68452

high

Description

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests cca_cipher2protkey() derives the copy length for the CPRB parameter block directly from the length field in the key token. Reject the request early if the token length exceeds the available space in the parameter block.

References

https://git.kernel.org/stable/c/ad93a1f1a45652478c0cf4eb029114e03af57f3b

https://git.kernel.org/stable/c/4fc46deceda076d429ef3fab2ccf8d96629ebd23

https://git.kernel.org/stable/c/406b317ea2b501f6f5eca1264293c9399a73a778

https://git.kernel.org/stable/c/3859f630b674801a00bca39bc451f52288591f65

https://git.kernel.org/stable/c/06afe425d5283b9764303de47f554da5a808ce8a

Details

Source: Mitre, NVD

Published: 2026-08-13

Updated: 2026-08-13

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High