UnratedFix available

UBUNTU-CVE-2022-47952

Type: advisorySource: OSV1 source record

lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because "Failed to open" often indicates that a file does not exist, whereas "does not refer to a network namespace path" often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that "we will report back to the user that the open() failed but the user has no way of knowing why it failed"; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.

Announced 1 Jan 2023Group revision 1

Original source ↗

UBUNTU-CVE-2022-47952

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:UBUNTU-CVE-2022-47952

lxc

Source reference: /affected/0/package/name

Affected versions: 2.1.0-0ubuntu1
Source reference: /affected/0/versions
2.1.1-0ubuntu1
Source reference: /affected/0/versions
3.0.0~beta1-0ubuntu3
Source reference: /affected/0/versions
3.0.0~beta2-0ubuntu2
Source reference: /affected/0/versions
3.0.0~beta3-0ubuntu1
Source reference: /affected/0/versions
3.0.0~beta4-0ubuntu1
Source reference: /affected/0/versions
3.0.0-0ubuntu1
Source reference: /affected/0/versions
3.0.0-0ubuntu2
Source reference: /affected/0/versions
3.0.1-0ubuntu1~18.04.1
Source reference: /affected/0/versions
3.0.1-0ubuntu1~18.04.2
Source reference: /affected/0/versions
3.0.2-0ubuntu1~18.04.1
Source reference: /affected/0/versions
3.0.3-0ubuntu1~18.04.1
Source reference: /affected/0/versions
3.0.3-0ubuntu1~18.04.3
Source reference: /affected/0/versions
Fixed versions: 3.0.3-0ubuntu1~18.04.3+esm1
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

lxc

Source reference: /affected/1/package/name

Affected versions: 3.0.4-0ubuntu1
Source reference: /affected/1/versions
3.0.4-0ubuntu2
Source reference: /affected/1/versions
1:4.0.0-0ubuntu2
Source reference: /affected/1/versions
1:4.0.1-0ubuntu1
Source reference: /affected/1/versions
1:4.0.1-0ubuntu2
Source reference: /affected/1/versions
1:4.0.2-0ubuntu1
Source reference: /affected/1/versions
1:4.0.6-0ubuntu1~20.04.1
Source reference: /affected/1/versions
1:4.0.12-0ubuntu1~20.04.1
Source reference: /affected/1/versions
Fixed versions: 1:4.0.12-0ubuntu1~20.04.1+esm1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

lxc

Source reference: /affected/2/package/name

Affected versions: 1:4.0.10-0ubuntu5
Source reference: /affected/2/versions
1:4.0.12-0ubuntu1
Source reference: /affected/2/versions
1:4.0.12-0ubuntu2
Source reference: /affected/2/versions
1:5.0.0~git2209-g5a7b9ce67-0ubuntu1
Source reference: /affected/2/versions
1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1
Source reference: /affected/2/versions
Fixed versions: 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

lxc

Source reference: /affected/3/package/name

Affected versions: 1:5.0.1-0ubuntu7
Source reference: /affected/3/versions
1:5.0.1-0ubuntu8
Source reference: /affected/3/versions
1:5.0.3-2ubuntu5
Source reference: /affected/3/versions
1:5.0.3-2ubuntu7
Source reference: /affected/3/versions
1:5.0.3-2ubuntu7.1
Source reference: /affected/3/versions
1:5.0.3-2ubuntu7.2
Source reference: /affected/3/versions
1:5.0.3-2ubuntu7.3
Source reference: /affected/3/versions
Fixed versions: 1:5.0.3-2ubuntu7.3+esm1
Source reference: /affected/3/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": "3.0.3-0ubuntu1~18.04.3+esm1"
          }
        ]
      }
    ],
    "package": {
      "name": "lxc",
      "purl": "pkg:deb/ubuntu/lxc?arch=source&distro=esm-infra%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "versions": [
      "2.1.0-0ubuntu1",
      "2.1.1-0ubuntu1",
      "3.0.0~beta1-0ubuntu3",
      "3.0.0~beta2-0ubuntu2",
      "3.0.0~beta3-0ubuntu1",
      "3.0.0~beta4-0ubuntu1",
      "3.0.0-0ubuntu1",
      "3.0.0-0ubuntu2",
      "3.0.1-0ubuntu1~18.04.1",
      "3.0.1-0ubuntu1~18.04.2",
      "3.0.2-0ubuntu1~18.04.1",
      "3.0.3-0ubuntu1~18.04.1",
      "3.0.3-0ubuntu1~18.04.3"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-47952.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "liblxc-common",
          "binary_version": "3.0.3-0ubuntu1~18.04.3+esm1"
        },
        {
          "binary_name": "liblxc1",
          "binary_version": "3.0.3-0ubuntu1~18.04.3+esm1"
        },
        {
          "binary_name": "libpam-cgfs",
          "binary_version": "3.0.3-0ubuntu1~18.04.3+esm1"
        },
        {
          "binary_name": "lxc",
          "binary_version": "3.0.3-0ubuntu1~18.04.3+esm1"
        },
        {
          "binary_name": "lxc-utils",
          "binary_version": "3.0.3-0ubuntu1~18.04.3+esm1"
        },
        {
          "binary_name": "lxc1",
          "binary_version": "3.0.3-0ubuntu1~18.04.3+esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:4.0.12-0ubuntu1~20.04.1+esm1"
          }
        ]
      }
    ],
    "package": {
      "name": "lxc",
      "purl": "pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "versions": [
      "3.0.4-0ubuntu1",
      "3.0.4-0ubuntu2",
      "1:4.0.0-0ubuntu2",
      "1:4.0.1-0ubuntu1",
      "1:4.0.1-0ubuntu2",
      "1:4.0.2-0ubuntu1",
      "1:4.0.6-0ubuntu1~20.04.1",
      "1:4.0.12-0ubuntu1~20.04.1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-47952.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "liblxc-common",
          "binary_version": "1:4.0.12-0ubuntu1~20.04.1+esm1"
        },
        {
          "binary_name": "liblxc1",
          "binary_version": "1:4.0.12-0ubuntu1~20.04.1+esm1"
        },
        {
          "binary_name": "libpam-cgfs",
          "binary_version": "1:4.0.12-0ubuntu1~20.04.1+esm1"
        },
        {
          "binary_name": "lxc",
          "binary_version": "1:4.0.12-0ubuntu1~20.04.1+esm1"
        },
        {
          "binary_name": "lxc-utils",
          "binary_version": "1:4.0.12-0ubuntu1~20.04.1+esm1"
        },
        {
          "binary_name": "lxc1",
          "binary_version": "1:4.0.12-0ubuntu1~20.04.1+esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
          }
        ]
      }
    ],
    "package": {
      "name": "lxc",
      "purl": "pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Fjammy",
      "ecosystem": "Ubuntu:Pro:22.04:LTS"
    },
    "versions": [
      "1:4.0.10-0ubuntu5",
      "1:4.0.12-0ubuntu1",
      "1:4.0.12-0ubuntu2",
      "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1",
      "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-47952.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "liblxc-common",
          "binary_version": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
        },
        {
          "binary_name": "liblxc1",
          "binary_version": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
        },
        {
          "binary_name": "libpam-cgfs",
          "binary_version": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
        },
        {
          "binary_name": "lxc",
          "binary_version": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
        },
        {
          "binary_name": "lxc-utils",
          "binary_version": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
        },
        {
          "binary_name": "lxc1",
          "binary_version": "1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:5.0.3-2ubuntu7.3+esm1"
          }
        ]
      }
    ],
    "package": {
      "name": "lxc",
      "purl": "pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Fnoble",
      "ecosystem": "Ubuntu:Pro:24.04:LTS"
    },
    "versions": [
      "1:5.0.1-0ubuntu7",
      "1:5.0.1-0ubuntu8",
      "1:5.0.3-2ubuntu5",
      "1:5.0.3-2ubuntu7",
      "1:5.0.3-2ubuntu7.1",
      "1:5.0.3-2ubuntu7.2",
      "1:5.0.3-2ubuntu7.3"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-47952.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "liblxc-common",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        },
        {
          "binary_name": "liblxc1t64",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        },
        {
          "binary_name": "libpam-cgfs",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        },
        {
          "binary_name": "lxc",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        },
        {
          "binary_name": "lxc-tests",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        },
        {
          "binary_name": "lxc-utils",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        },
        {
          "binary_name": "lxc1",
          "binary_version": "1:5.0.3-2ubuntu7.3+esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #22392 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 06:00:56 GMT
Publisher date: Sun, 01 Jan 2023 06:15:00 GMT

Read the original announcement

Revision history

25 Oct 2026UBUNTU-CVE-2022-47952 · Revision 1Source updated