Integer overflow in Containerd
CVE-2024-40635
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Containerd — versions < 1.6.38, >= 1.7.0-beta.0, < 1.7.27, >= 2.0.0-beta.0, < 2.0.4
- Linuxfoundation Containerd
- Debian Linux — versions 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/containerd/containerd/security/advisories/GHSA-265r-hfxg-fhmg (Vendor Advisory)
- github.com/containerd/containerd/commit/05044ec0a9a75232cad458027ca83437aae3f4da (Patch)
- github.com/containerd/containerd/commit/1a43cb6a1035441f9aca8f5666a9b3ef9e70ab20 (Patch)
- github.com/containerd/containerd/commit/cf158e884cfe4812a6c371b59e4ea9bc4c46e51a (Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-40635?
- CVE-2024-40635 is a medium-severity vulnerability in Containerd, classified under Integer Overflow or Wraparound. CVSS score: 4.6/10. Published 2025-03-17.
- How severe is CVE-2024-40635?
- Medium severity. CVSS v3 base score is 4.6 out of 10.
- Is CVE-2024-40635 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.