tools/power/x86/intel-speed-select: Harden daemon pidfile open
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.
CVE-2026-80663
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80663
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6",
"lessThan": "905493a6338c82a70da16f86e0a6215db5a3d73d",
"versionType": "git"
},
{
"status": "affected",
"version": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6",
"lessThan": "db938eb9a3c1317596c28e94413b33426508d51b",
"versionType": "git"
},
{
"status": "affected",
"version": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6",
"lessThan": "72a07abc6b9046f07a08bba353cad7667bcc9dce",
"versionType": "git"
},
{
"status": "affected",
"version": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6",
"lessThan": "19ffeb30fdfce63f8d6aca71bcdddb3f69d46278",
"versionType": "git"
},
{
"status": "affected",
"version": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6",
"lessThan": "e8adac69d1bdf035ef97cc914e845acd4ef08e28",
"versionType": "git"
},
{
"status": "affected",
"version": "7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6",
"lessThan": "607af438e6430893a822964c841a1994b33acccc",
"versionType": "git"
}
],
"programFiles": [
"tools/power/x86/intel-speed-select/isst-daemon.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"tools/power/x86/intel-speed-select/isst-daemon.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80663
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34351 · Revision 1
- Added to Heist Feed
- Publisher date