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s390/zcrypt: Validate length for CCA AES cipher key requests

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-68452

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-68452

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "be037204e4f595e4bd2159acda146677a1dc6342",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "4e500ecb6704d879f9c2417c2ed6faba595015ca",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "7f9e5a3dbb14a9b321a1dfa30390402c673f82dc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "406b317ea2b501f6f5eca1264293c9399a73a778",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "4fc46deceda076d429ef3fab2ccf8d96629ebd23",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "ad93a1f1a45652478c0cf4eb029114e03af57f3b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "3859f630b674801a00bca39bc451f52288591f65",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd",
        "lessThan": "06afe425d5283b9764303de47f554da5a808ce8a",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/s390/crypto/zcrypt_ccamisc.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.4"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.4",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.265",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.183",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.151",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.103",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.44",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.8",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/s390/crypto/zcrypt_ccamisc.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-68452

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41730 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-68452 · Revision 1Source updated