HighFix available
s390/zcrypt: Validate length for CCA AES cipher key requests
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.265, 5.15.216, 6.1.183, 6.12.103, 6.18.44, 6.6.151, 7.1.8
- CVEs
- CVE-2026-68452
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 06:31 UTC · Revision 1
Source evidence
s390/zcrypt: Validate length for CCA AES cipher key requests
core-osv · Original sourcePublished 13 Aug 2026, 13:59 UTC
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.
osv:CVE-2026-68452
Kernel
Fixed versions: 5.10.265, 5.15.216, 6.1.183, 6.6.151, 6.12.103, 6.18.44, 7.1.8
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2026-68452",
"method": "structured",
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"title": "s390/zcrypt: Validate length for CCA AES cipher key requests",
"summary": "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.",
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"modified": "2026-10-28T02:30:26.443808512Z",
"provider": "osv",
"references": [
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"https://nvd.nist.gov/vuln/detail/CVE-2026-68452",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 493067,
"published_at": "2026-08-13T13:59:54.84+00:00"
}