{"id":"CVE-2026-80663","revision":null,"records":[{"revision":"8162a12fe0f542b5ae094bb5b64afcd4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80663","aliases":[],"title":"tools/power/x86/intel-speed-select: Harden daemon pidfile open","description":"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.","state":0,"publishedAt":"2026-08-28T06:49:06.882+00:00","modifiedAt":"2026-10-16T19:26:32.045+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"tools/power/x86/intel-speed-select/isst-daemon.c\"\n ],\n \"versions\": [\n {\n \"version\": \"7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6\",\n \"lessThan\": \"905493a6338c82a70da16f86e0a6215db5a3d73d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6\",\n \"lessThan\": \"db938eb9a3c1317596c28e94413b33426508d51b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6\",\n \"lessThan\": \"72a07abc6b9046f07a08bba353cad7667bcc9dce\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6\",\n \"lessThan\": \"19ffeb30fdfce63f8d6aca71bcdddb3f69d46278\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6\",\n \"lessThan\": \"e8adac69d1bdf035ef97cc914e845acd4ef08e28\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6\",\n \"lessThan\": \"607af438e6430893a822964c841a1994b33acccc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"tools/power/x86/intel-speed-select/isst-daemon.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.18\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.18\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.178\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.145\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.97\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.40\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.5\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d","https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b","https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce","https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278","https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28","https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80663","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80663","identifiers":["CVE-2026-80663"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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