CVE-2026-68452
s390/zcrypt: Validate length for CCA AES cipher key requests
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 13, 2026 |
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Affected Versions
Linux / Linux
4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd < 406b317ea2b501f6f5eca1264293c9399a73a778 4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd < 4fc46deceda076d429ef3fab2ccf8d96629ebd23 4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd < ad93a1f1a45652478c0cf4eb029114e03af57f3b 4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd < 3859f630b674801a00bca39bc451f52288591f65 4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd < 06afe425d5283b9764303de47f554da5a808ce8a
Linux / Linux
5.4
References
git.kernel.org: https://git.kernel.org/stable/c/406b317ea2b501f6f5eca1264293c9399a73a778 git.kernel.org: https://git.kernel.org/stable/c/4fc46deceda076d429ef3fab2ccf8d96629ebd23 git.kernel.org: https://git.kernel.org/stable/c/ad93a1f1a45652478c0cf4eb029114e03af57f3b git.kernel.org: https://git.kernel.org/stable/c/3859f630b674801a00bca39bc451f52288591f65 git.kernel.org: https://git.kernel.org/stable/c/06afe425d5283b9764303de47f554da5a808ce8a