CVEvulnerability
CVE-2026-80663
7.1 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-28
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
tools/power/x86/intel-speed-select: Harden daemon pidfile open
Avoid symlink-based pidfile clobbering by opening the pidfile with
O_NOFOLLOW and validating it with fstat() before locking/writing.
The daemon currently uses a fixed pidfile path under /tmp. A local
unprivileged user can pre-create a symlink at that path and cause a
root-run daemon instance to write into an attacker-chosen file.
References
- https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 git.kernel.org
- https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc git.kernel.org
- https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce git.kernel.org
- https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d git.kernel.org
- https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b git.kernel.org
- https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28 git.kernel.org