tools/power/x86/intel-speed-select: Harden daemon pidfile open (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
References
- 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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-67539
- GCVE · GCVE-0-2026-80663
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 905493a6338c82a70da16f86e0a6215db5a3d73d ; affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < db938eb9a3c1317596c28e94413b33426508d51b ; affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 72a07abc6b9046f07a08bba353cad7667bcc9dce ; affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 ; affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < e8adac69d1bdf035ef97cc914e845acd4ef08e28 ; affected 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 < 607af438e6430893a822964c841a1994b33acccc |
| Linux · Linux | affected 5.18 ; unaffected 0 < 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.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |