crypto: krb5 - use kfree_sensitive() for derived key buffers

{
  "id": "f4c6c0875c66e9acd13a042f2fc2b3fe8481956e0b7aedae8f895792a76e5454",
  "url": "https://osv.dev/vulnerability/CVE-2026-80924",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "crypto: krb5 - use kfree_sensitive() for derived key buffers",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: crypto: krb5 - use kfree_sensitive() for derived key buffers crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum() free the buffer holding the freshly derived keys with plain kfree(), leaving the key material behind in the freed slab object.",
    "evidence": "osv:CVE-2026-80924",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.49",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-80924",
      "aliases": [
        "CVE-2026-80924"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3936f02bf2d3308a7359dd37dd96cd60603d8170"
                },
                {
                  "fixed": "731a5b6fb4c1705f9405d9029dd64ea81e336207"
                },
                {
                  "fixed": "91b96dc9cc250cd16751f53de525cf3442ca0962"
                },
                {
                  "fixed": "a1bf79365794783b19f5b09e8a23f7ee311e8931"
                },
                {
                  "fixed": "f7d53dd3f267e46a784f219a75072f2f400d42b9"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80924.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
                },
                {
                  "fixed": "6.18.49"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.2.0"
                },
                {
                  "fixed": "7.2.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80924.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.895880029Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/731a5b6fb4c1705f9405d9029dd64ea81e336207",
        "https://git.kernel.org/stable/c/91b96dc9cc250cd16751f53de525cf3442ca0962",
        "https://git.kernel.org/stable/c/a1bf79365794783b19f5b09e8a23f7ee311e8931",
        "https://git.kernel.org/stable/c/f7d53dd3f267e46a784f219a75072f2f400d42b9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80924.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80924",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80924.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80924",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514262,
  "published_at": "2026-09-09T16:19:44.15+00:00"
}