{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd"
            },
            {
              "fixed": "406b317ea2b501f6f5eca1264293c9399a73a778"
            },
            {
              "fixed": "4fc46deceda076d429ef3fab2ccf8d96629ebd23"
            },
            {
              "fixed": "ad93a1f1a45652478c0cf4eb029114e03af57f3b"
            },
            {
              "fixed": "3859f630b674801a00bca39bc451f52288591f65"
            },
            {
              "fixed": "06afe425d5283b9764303de47f554da5a808ce8a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.4.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68452.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/zcrypt: Validate length for CCA AES cipher key requests\n\ncca_cipher2protkey() derives the copy length for the CPRB parameter\nblock directly from the length field in the key token. Reject the\nrequest early if the token length exceeds the available space in the\nparameter block.",
  "id": "CVE-2026-68452",
  "modified": "2026-08-18T03:31:24.109398208Z",
  "published": "2026-08-13T13:59:54.840Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06afe425d5283b9764303de47f554da5a808ce8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3859f630b674801a00bca39bc451f52288591f65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/406b317ea2b501f6f5eca1264293c9399a73a778"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4fc46deceda076d429ef3fab2ccf8d96629ebd23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad93a1f1a45652478c0cf4eb029114e03af57f3b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68452.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68452"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "s390/zcrypt: Validate length for CCA AES cipher key requests"
}