What’s Vulnerable › Vulnerabilities

CVE-2026-80663: tools/power/x86/intel-speed-select: Harden daemon pidfile open

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-10-16

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.

Affected products

• Linux kernel: 5.18 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278
• https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc
• https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce
• https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d
• https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b
• https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28

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