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Medium

containerd has an integer overflow in User ID handling

Type: advisorySources: OSV

containerd is an open-source container runtime. A bug was found in containerd prior to versions 1.6.38, 1.7.27, and 2.0.4 where containers launched with a User set as a `UID:GID` larger than the maximum 32-bit signed integer can cause an overflow condition where the container ultimately runs as root (UID 0). This could cause unexpected behavior for environments that require containers to run as a non-root user. This bug has been fixed in containerd 1.6.38, 1.7.27, and 2.04. As a workaround, ensure that only trusted images are used and that only trusted users have permissions to import images.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2024-40635
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 15:28 UTC · Revision 1

Source evidence

containerd has an integer overflow in User ID handling

core-osv · Original source

Published 17 Mar 2025, 21:32 UTC

containerd is an open-source container runtime. A bug was found in containerd prior to versions 1.6.38, 1.7.27, and 2.0.4 where containers launched with a User set as a `UID:GID` larger than the maximum 32-bit signed integer can cause an overflow condition where the container ultimately runs as root (UID 0). This could cause unexpected behavior for environments that require containers to run as a non-root user. This bug has been fixed in containerd 1.6.38, 1.7.27, and 2.04. As a workaround, ensure that only trusted images are used and that only trusted users have permissions to import images.

osv:CVE-2024-40635
Complete source record
{
  "id": "9f603fe95d1e59ae7c1bad1ca7b7280100109b141bc16c16a170f8ae39b2e05b",
  "url": "https://osv.dev/vulnerability/CVE-2024-40635",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "containerd has an integer overflow in User ID handling",
    "summary": "containerd is an open-source container runtime. A bug was found in containerd prior to versions 1.6.38, 1.7.27, and 2.0.4 where containers launched with a User set as a `UID:GID` larger than the maximum 32-bit signed integer can cause an overflow condition where the container ultimately runs as root (UID 0). This could cause unexpected behavior for environments that require containers to run as a non-root user. This bug has been fixed in containerd 1.6.38, 1.7.27, and 2.04. As a workaround, ensure that only trusted images are used and that only trusted users have permissions to import images.",
    "evidence": "osv:CVE-2024-40635",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-40635",
      "aliases": [
        "CVE-2024-40635",
        "GHSA-265r-hfxg-fhmg",
        "GO-2025-3528"
      ],
      "metrics": [
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          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N"
        }
      ],
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                  "introduced": "1fbd70374134b891f97ce19c70b6e50c7b9f4e0d"
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                {
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                {
                  "fixed": "1a43cb6a1035441f9aca8f5666a9b3ef9e70ab20"
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              ],
              "database_specific": {
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                    "source": "REFERENCES_COMMIT"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-40635.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:20.573280896Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00005.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40635.json",
        "https://github.com/containerd/containerd/security/advisories/GHSA-265r-hfxg-fhmg",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-40635",
        "https://github.com/containerd/containerd/commit/05044ec0a9a75232cad458027ca83437aae3f4da",
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        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40635.json"
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    "related_cves": [
      {
        "value": "CVE-2024-40635",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 486528,
  "published_at": "2025-03-17T21:32:37.894+00:00"
}