{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "42d9f6c774790d290c175e8775ce9f1366438098"
            },
            {
              "fixed": "7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf"
            },
            {
              "fixed": "962ddc5a7a4b04c007bba0f3e7298cda13c62efd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39777.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: acomp - Fix CFI failure due to type punning\n\nTo avoid a crash when control flow integrity is enabled, make the\nworkspace (\"stream\") free function use a consistent type, and call it\nthrough a function pointer that has that same type.",
  "id": "CVE-2025-39777",
  "modified": "2026-04-01T23:09:32.306067616Z",
  "published": "2025-09-11T16:56:29.638Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/962ddc5a7a4b04c007bba0f3e7298cda13c62efd"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39777.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39777"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "crypto: acomp - Fix CFI failure due to type punning"
}