CVE-2026-80663tools/power/x86/intel-speed-select: Harden daemon pidfile open
- 7.1HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 2 days later
· 2 days later
Published
- 49 days later
· 49 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 – < 905493a6338c82a70da16f86e0a6215db5a3d73d
- affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 – < db938eb9a3c1317596c28e94413b33426508d51b
- affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 – < 72a07abc6b9046f07a08bba353cad7667bcc9dce
- affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 – < 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278
- affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 – < e8adac69d1bdf035ef97cc914e845acd4ef08e28
- affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 – < 607af438e6430893a822964c841a1994b33acccc
- affected 5.18
- unaffected < 5.18
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d (opens in a new tab)
- https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b (opens in a new tab)
- https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce (opens in a new tab)
- https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 (opens in a new tab)
- https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28 (opens in a new tab)
- https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-67539 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80663)Record last updated .