Bug 2496439

Summary: CVE-2026-47262 kubernetes1.34: containerd: Denial of Service via maliciously crafted image leading to unbounded group parsing [fedora-all]
Product: [Fedora] Fedora Reporter: jkelly <jkelly>
Component: kubernetes1.34Assignee: Brad Smith <bradley.g.smith>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: bradley.g.smith, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["93373801-a3ad-4635-83bf-8d3b29847e99"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-07-23 14:17:22 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2496126    

Description jkelly 2026-07-02 10:36:34 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

containerd is an open-source container runtime. Versions prior to 1.7.33, 2.0.10, 2.1.9, 2.2.5 and 2.3.2, contain a vulnerability that allows a maliciously crafted image to cause a Denial of Service (DoS) condition. When creating a container from this image, memory exhaustion occurs, leading to an Out Of Memory (OOM) kill of the containerd process. This renders the container runtime API unavailable and can disrupt clients such as the Docker Engine or Kubernetes control-plane components. This issue has been fixed in versions 1.7.33, 2.0.10, 2.1.9, 2.2.5 and 2.3.2.
Comment 1 Brad Smith 2026-07-23 14:17:22 UTC 
kubernetes [ release-1.34][?] Elapsed: 49s
❯ go mod why -m github.com/containerd/containerd/v2
# github.com/containerd/containerd/v2
(main module does not need module github.com/containerd/containerd/v2)

kubernetes [ release-1.34][?]
❯ go mod why -m github.com/containerd/containerd
# github.com/containerd/containerd
(main module does not need module github.com/containerd/containerd)