Bug 2540879 (CVE-2026-53493)
| Summary: | CVE-2026-53493 github.com/containerd/containerd: containerd: Denial of Service via crafted OCI image index | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in containerd. During an image pull operation, containerd fails to enforce recursion and deduplication limits when traversing descriptor graphs in Open Container Initiative (OCI) image indexes. A remote attacker can exploit this flaw by serving a crafted image index, triggering excessive CPU and memory consumption. This issue leads to a Denial of Service (DoS), resulting in severe container creation stalls and potential host node instability before any container is executed.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-09-25 01:01:13 UTC
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