CVE-2026-53492

Description

containerd is an open-source container runtime. In Versions prior to 2.3.2, 2.2.5 and 2.1.9, the CRI implementation improperly trusts Container Device Interface (CDI) annotations found within untrusted checkpoint image metadata during container restoration. When restoring a container from a checkpoint, containerd preserves CDI-related annotations from the checkpoint archive rather than relying solely on the pod's create-time specification. This allows a user with pod creation permissions to bypass standard Kubernetes resource allocation and device plugin enforcement, injecting arbitrary CDI edits (such as device nodes and host mounts) into the restored container. Successful exploitation requires that the node has CDI enabled and contains a matching host CDI specification for the requested device; environments where CDI is disabled or lacking sensitive device specifications are not affected. This issue has been fixed in versions 2.3.2, 2.2.5 and 2.1.9.

Read the notes from the security team

Why is this CVE high priority?

Critical severity

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
containerd	26.04 LTS resolute	Not affected
	25.10 questing	Not affected
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
containerd-app	26.04 LTS resolute	Fixed 2.2.2-0ubuntu1.1
	25.10 questing	Fixed 2.2.1-0ubuntu1~25.10.2
	24.04 LTS noble	Fixed 2.2.1-0ubuntu1~24.04.3
	22.04 LTS jammy	Fixed 2.2.1-0ubuntu1~22.04.2
	20.04 LTS focal	Not affected
containerd-stable	26.04 LTS resolute	Fixed 2.2.2-0ubuntu1.1
	25.10 questing	Fixed 2.1.6-0ubuntu1~25.10.2
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release

Notes

alexmurray

Traditionally the containerd source package contained both the library and docker application. However, in releases that contain the containerd-app source package, the containerd source package contains only the library whilst the docker application itself is contained in the containerd-app package.

mdeslaur

containerd-app gets new upstream versions, containerd-stable gets backported security updates and minor point updates

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
containerd-app	Upstream: be84606
containerd-stable	Upstream: 02045fd Upstream: be84606

Severity score breakdown

CVSS version:

Base score 8.4 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Attack requirements	None
Privileges required	Low
User interaction	None
Vulnerable system - Confidentiality impact	None
Vulnerable system - Integrity impact	High
Vulnerable system - Availability impact	None
Subsequent system - Confidentiality impact	High
Subsequent system - Integrity impact	High
Subsequent system - Availability impact	None

Scores

Parameter	Value
Base score	8.4 · High
Base + Threat score	-
Base + Environmental score	-
Base + Threat + Environmental score	-

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N

Base score 9.6 · Critical