{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6"
            },
            {
              "fixed": "905493a6338c82a70da16f86e0a6215db5a3d73d"
            },
            {
              "fixed": "db938eb9a3c1317596c28e94413b33426508d51b"
            },
            {
              "fixed": "72a07abc6b9046f07a08bba353cad7667bcc9dce"
            },
            {
              "fixed": "19ffeb30fdfce63f8d6aca71bcdddb3f69d46278"
            },
            {
              "fixed": "e8adac69d1bdf035ef97cc914e845acd4ef08e28"
            },
            {
              "fixed": "607af438e6430893a822964c841a1994b33acccc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.18.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80663.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntools/power/x86/intel-speed-select: Harden daemon pidfile open\n\nAvoid symlink-based pidfile clobbering by opening the pidfile with\nO_NOFOLLOW and validating it with fstat() before locking/writing.\n\nThe daemon currently uses a fixed pidfile path under /tmp. A local\nunprivileged user can pre-create a symlink at that path and cause a\nroot-run daemon instance to write into an attacker-chosen file.",
  "id": "CVE-2026-80663",
  "modified": "2026-08-31T03:30:39.456763936Z",
  "published": "2026-08-28T06:49:06.882Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80663.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80663"
    },
    {
      "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:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "tools/power/x86/intel-speed-select: Harden daemon pidfile open"
}