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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd affected < 406b317ea2b501f6f5eca1264293c9399a73a778
4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd affected < 4fc46deceda076d429ef3fab2ccf8d96629ebd23
4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd affected < ad93a1f1a45652478c0cf4eb029114e03af57f3b
4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd affected < 3859f630b674801a00bca39bc451f52288591f65
4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd affected < 06afe425d5283b9764303de47f554da5a808ce8a
Linux Linux affected
Version Status Constraints
5.4 affected —
0 unaffected < 5.4
6.6.151 unaffected ≤ 6.6.*
6.12.103 unaffected ≤ 6.12.*
6.18.44 unaffected ≤ 6.18.*
7.1.8 unaffected ≤ 7.1.*
7.2-rc6 unaffected ≤ *

No data.

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/06afe425d5283b9764303de47f554da5a808ce8a cve-icon cve-icon
https://git.kernel.org/stable/c/3859f630b674801a00bca39bc451f52288591f65 cve-icon cve-icon
https://git.kernel.org/stable/c/406b317ea2b501f6f5eca1264293c9399a73a778 cve-icon cve-icon
https://git.kernel.org/stable/c/4fc46deceda076d429ef3fab2ccf8d96629ebd23 cve-icon cve-icon
https://git.kernel.org/stable/c/ad93a1f1a45652478c0cf4eb029114e03af57f3b cve-icon cve-icon
History

Thu, 13 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title s390/zcrypt: Validate length for CCA AES cipher key requests
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-13T13:59:54.840Z

Reserved: 2026-07-30T09:28:09.395Z

Link: CVE-2026-68452

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-13T15:19:57.970

Modified: 2026-08-13T15:19:57.970

Link: CVE-2026-68452

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.