Vulnerability details
CVE-2026-80663
Linux Linux
tools/power/x86/intel-speed-select: Harden daemon pidfile open
CVSS 3.1
7.1High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 5.18 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 ≤ v < db938eb9a3c1317596c28e94413b33426508d51b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 ≤ v < 72a07abc6b9046f07a08bba353cad7667bcc9dce | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 ≤ v < 905493a6338c82a70da16f86e0a6215db5a3d73d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 ≤ v < e8adac69d1bdf035ef97cc914e845acd4ef08e28 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 ≤ v < 607af438e6430893a822964c841a1994b33acccc | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 ≤ v < 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d
- https://git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b
- https://git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce
- https://git.kernel.org/stable/c/19ffeb30fdfce63f8d6aca71bcdddb3f69d46278
- https://git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28
- https://git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc
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Details
- Published
- 2026-08-28
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.12%
Probability of exploitation in 30 days
2.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- —