CVE-2025-47291

Name	CVE-2025-47291
Description	containerd is an open-source container runtime. A bug was found in the containerd's CRI implementation where containerd, starting in version 2.0.1 and prior to version 2.0.5, doesn't put usernamespaced containers under the Kubernetes' cgroup hierarchy, therefore some Kubernetes limits are not honored. This may cause a denial of service of the Kubernetes node. This bug has been fixed in containerd 2.0.5+ and 2.1.0+. Users should update to these versions to resolve the issue. As a workaround, disable usernamespaced pods in Kubernetes temporarily.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
containerd (PTS)	bullseye	1.4.13~ds1-1~deb11u4	fixed
	bullseye (security)	1.4.13~ds1-1~deb11u5	fixed
	bookworm	1.6.20~ds1-1+deb12u1	fixed
	sid, trixie	1.7.24~ds1-6	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
containerd	source	(unstable)	(not affected)

- containerd <not-affected> (Vulnerable code not present)
https://github.com/containerd/containerd/security/advisories/GHSA-cxfp-7pvr-95ff