{"id":"CVE-2026-80663","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80663","summary":"tools/power/x86/intel-speed-select: Harden daemon pidfile open","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.","published":"2026-08-28T06:49:06.882Z","modified":"2026-08-30T03:48:20.945878922Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.1.178"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-30T03:48:20.945878922Z"}}