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DEBIAN-CVE-2026-19079

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

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/versions

3.11-1

Source reference: /affected/0/versions

3.4-1

Source reference: /affected/0/versions

3.5-1

Source reference: /affected/0/versions

3.5-2

Source reference: /affected/0/versions

3.5-2.1

Source reference: /affected/0/versions

3.7-1

Source reference: /affected/0/versions

3.7-2

Source reference: /affected/0/versions

3.8-1

Source reference: /affected/0/versions

3.8.1-1

Source reference: /affected/0/versions

3.8.1-2

Source reference: /affected/0/versions

3.9-1

Source reference: /affected/0/versions

3.9-2

Source 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/versions

3.11-1

Source reference: /affected/1/versions

3.8.1-2

Source reference: /affected/1/versions

3.9-1

Source reference: /affected/1/versions

3.9-2

Source 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/versions

3.11-1

Source reference: /affected/2/versions

3.8.1-2

Source reference: /affected/2/versions

3.9-1

Source reference: /affected/2/versions

3.9-2

Source 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
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Publisher date
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