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CVE-2026-80663 (GCVE-0-2026-80663)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:49 – Updated: 2026-08-29 06:21
VLAI
Title
tools/power/x86/intel-speed-select: Harden daemon pidfile open
Summary
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.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 , < 905493a6338c82a70da16f86e0a6215db5a3d73d (git)
Affected: 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 , < db938eb9a3c1317596c28e94413b33426508d51b (git)
Affected: 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 , < 72a07abc6b9046f07a08bba353cad7667bcc9dce (git)
Affected: 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 , < 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 (git)
Affected: 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 , < e8adac69d1bdf035ef97cc914e845acd4ef08e28 (git)
Affected: 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 , < 607af438e6430893a822964c841a1994b33acccc (git)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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    "datePublished": "2026-08-28T06:49:06.882Z",
    "dateReserved": "2026-08-26T14:34:25.781Z",
    "dateUpdated": "2026-08-29T06:21:48.835Z",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T16:47:23+00:00",
      "cve": "CVE-2026-80663",
      "id": "CVE-2026-80663",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tools/power/x86/intel-speed-select: Harden daemon pidfile open",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80663.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-03T16:25:55Z",
      "cve": "CVE-2026-80663",
      "id": "CVE-2026-80663",
      "initial_release_date": "2026-08-28T16:34:52Z",
      "product_status:known_affected": "85",
      "product_status:known_not_affected": "268",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80663",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80663.json",
      "version": "4"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.