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DEBIAN-CVE-2026-3888

Type: advisorySource: OSV1 source record

Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-3888

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-2026-3888

snapd

Source reference: /affected/0/package/name

Affected versions
2.57.6-1

Source reference: /affected/0/versions

Fixed versions
2.57.6-1+deb12u1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

snapd

Source reference: /affected/1/package/name

Affected versions
2.68.3-3

Source reference: /affected/1/versions

Fixed versions
2.68.3-3+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

snapd

Source reference: /affected/2/package/name

Affected versions
2.68.3-3

Source reference: /affected/2/versions

2.71-1

Source reference: /affected/2/versions

2.71-2

Source reference: /affected/2/versions

2.71-3

Source reference: /affected/2/versions

2.72-1

Source reference: /affected/2/versions

2.73-3

Source reference: /affected/2/versions

2.73-4

Source reference: /affected/2/versions

2.74.1-1

Source reference: /affected/2/versions

2.75.2-1

Source reference: /affected/2/versions

2.75.2-2

Source reference: /affected/2/versions

Fixed versions
2.76-1

Source reference: /affected/2/ranges

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"
          },
          {
            "fixed": "2.57.6-1+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "snapd",
      "purl": "pkg:deb/debian/snapd?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.57.6-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-3888.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.68.3-3+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "snapd",
      "purl": "pkg:deb/debian/snapd?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.68.3-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-3888.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.76-1"
          }
        ]
      }
    ],
    "package": {
      "name": "snapd",
      "purl": "pkg:deb/debian/snapd?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.68.3-3",
      "2.71-1",
      "2.71-2",
      "2.71-3",
      "2.72-1",
      "2.73-3",
      "2.73-4",
      "2.74.1-1",
      "2.75.2-1",
      "2.75.2-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-3888.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57576 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-3888 · Revision 1Source updated