DEBIAN-CVE-2026-19079
A TOCTOU (Time-of-Check-Time-of-Use) race condition vulnerability was found in the fixfiles script in policycoreutils. When running fixfiles relabel or fixfiles restore, the script used find and chcon commands to locate and relabel unlabeled files under /tmp and other directories. A local attacker could exploit a race window between the file discovery and the label change operation by swapping directory components with symlinks, causing chcon to follow the symlink and modify SELinux labels on arbitrary system files. This could undermine SELinux mandatory access control protections on critical files such as /etc/shadow.
DEBIAN-CVE-2026-19079
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: osv:DEBIAN-CVE-2026-19079
policycoreutils
Source reference: /affected/0/package/name
- Affected versions
- 3.10-1
Source reference:
/affected/0/versions3.11-1Source reference:
/affected/0/versions3.4-1Source reference:
/affected/0/versions3.5-1Source reference:
/affected/0/versions3.5-2Source reference:
/affected/0/versions3.5-2.1Source reference:
/affected/0/versions3.7-1Source reference:
/affected/0/versions3.7-2Source reference:
/affected/0/versions3.8-1Source reference:
/affected/0/versions3.8.1-1Source reference:
/affected/0/versions3.8.1-2Source reference:
/affected/0/versions3.9-1Source reference:
/affected/0/versions3.9-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
policycoreutils
Source reference: /affected/1/package/name
- Affected versions
- 3.10-1
Source reference:
/affected/1/versions3.11-1Source reference:
/affected/1/versions3.8.1-2Source reference:
/affected/1/versions3.9-1Source reference:
/affected/1/versions3.9-2Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
policycoreutils
Source reference: /affected/2/package/name
- Affected versions
- 3.10-1
Source reference:
/affected/2/versions3.11-1Source reference:
/affected/2/versions3.8.1-2Source reference:
/affected/2/versions3.9-1Source reference:
/affected/2/versions3.9-2Source reference:
/affected/2/versions - 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.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policycoreutils",
"purl": "pkg:deb/debian/policycoreutils?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.10-1",
"3.11-1",
"3.4-1",
"3.5-1",
"3.5-2",
"3.5-2.1",
"3.7-1",
"3.7-2",
"3.8-1",
"3.8.1-1",
"3.8.1-2",
"3.9-1",
"3.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19079.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policycoreutils",
"purl": "pkg:deb/debian/policycoreutils?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.10-1",
"3.11-1",
"3.8.1-2",
"3.9-1",
"3.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19079.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "policycoreutils",
"purl": "pkg:deb/debian/policycoreutils?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.10-1",
"3.11-1",
"3.8.1-2",
"3.9-1",
"3.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19079.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56170 · Revision 1
- Added to Heist Feed
- Publisher date