🛡️ CVE-2024-40635 — containerd

🟡 CVSS 4.6 — Medium ✅ No Known Exploit CWE-190 NVD
4.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

containerd has an integer overflow in User ID handling

Impact

A bug was found in containerd 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.

Patches

This bug has been fixed in the following containerd versions:

  • 2.0.4 (Fixed in https://github.com/containerd/containerd/commit/1a43cb6a1035441f9aca8f5666a9b3ef9e70ab20)
  • 1.7.27 (Fixed in https://github.com/containerd/containerd/commit/05044ec0a9a75232cad458027ca83437aae3f4da)
  • 1.6.38 (Fixed in https://github.com/containerd/containerd/commit/cf158e884cfe4812a6c371b59e4ea9bc4c46e51a)

Users should update to these versions to resolve the issue.

Workarounds

Ensure that only trusted images are used and that only trusted users have permissions to import images.

Credits

The containerd project would like to thank [Benjamin Koltermann](https://github.com/p4ck3t0) and [emxll](https://github.com/emxll) for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md).

References

  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40635

For more information

If you have any questions or comments about this advisory:

To report a security issue in containerd:

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2024-40635 is classified as CWE-190: Integer Overflow or Wraparound. Arithmetic produces a value too large for its type and wraps around, so a later size or bounds check passes when it should not.

Affected software

CVE-2024-40635 is recorded against 4 packages.

  • containerd (from 2.0.0 up to 2.0.4)
  • debian-linux
  • github.com/containerd/containerd
  • github.com/containerd/containerd/v2

Timeline and source

Published on 17 March 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
github.com
github.com
lists.debian.org

CVE-2024-40635 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 4.6
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
CWE CWE-190
Public Exploit ✅ No
Source NVD
Published 2025-03-17
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
containerd 2.0.0 2.0.4
debian-linux — —
github.com/containerd/containerd — —
github.com/containerd/containerd/v2 — —

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