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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 affected < 905493a6338c82a70da16f86e0a6215db5a3d73d
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 affected < db938eb9a3c1317596c28e94413b33426508d51b
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 affected < 72a07abc6b9046f07a08bba353cad7667bcc9dce
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 affected < 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 affected < e8adac69d1bdf035ef97cc914e845acd4ef08e28
7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 affected < 607af438e6430893a822964c841a1994b33acccc
Linux Linux affected
Version Status Constraints
5.18 affected —
0 unaffected < 5.18
6.1.178 unaffected ≤ 6.1.*
6.6.145 unaffected ≤ 6.6.*
6.12.97 unaffected ≤ 6.12.*
6.18.40 unaffected ≤ 6.18.*
7.1.5 unaffected ≤ 7.1.*
7.2 unaffected ≤ *

No data.

No data.

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 cve-icon cve-icon
https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc cve-icon cve-icon
https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce cve-icon cve-icon
https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d cve-icon cve-icon
https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b cve-icon cve-icon
https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28 cve-icon cve-icon
History

Fri, 28 Aug 2026 07:30:00 +0000

Type Values Removed Values Added
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.
Title tools/power/x86/intel-speed-select: Harden daemon pidfile open
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-28T06:49:06.882Z

Reserved: 2026-08-26T14:34:25.781Z

Link: CVE-2026-80663

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T08:16:51.503

Modified: 2026-08-28T08:16:51.503

Link: CVE-2026-80663

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.