CVE-2026-80663
tools/power/x86/intel-speed-select: Harden daemon pidfile open
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 28, 2026 |
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Affected Versions
Linux / Linux
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 905493a6338c82a70da16f86e0a6215db5a3d73d 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < db938eb9a3c1317596c28e94413b33426508d51b 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 72a07abc6b9046f07a08bba353cad7667bcc9dce 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < e8adac69d1bdf035ef97cc914e845acd4ef08e28 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 607af438e6430893a822964c841a1994b33acccc
Linux / Linux
5.18
References
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/72a07abc6b9046f07a08bba353cad7667bcc9dce git.kernel.org: https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 git.kernel.org: https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28 git.kernel.org: https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc