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CVE-2026-80663

7.1 · HIGH

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 wi…

Published Aug 28, 2026EPSS 0.13%

Overview

CVE-2026-80663 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278Refgit.kernel.org/stable/c/607af438e6430893a822964c841a1994b33accccRefgit.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dceRefgit.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73dRefgit.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51bRefgit.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28

How CyberStrike helps

Frequently asked questions

What is CVE-2026-80663?

CVE-2026-80663 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-80663?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-80663?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-80663?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80663 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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