RHSA-2026:32974
Vulnerability from csaf_redhat - Published: 2026-06-29 09:51 - Updated: 2026-07-03 14:58A flaw was found in containerd, an open-source container runtime. A remote attacker could exploit this vulnerability by providing a maliciously crafted image. When a container is created from this image, it leads to uncontrolled resource consumption and memory exhaustion, causing the containerd process to terminate. This results in a Denial of Service (DoS) condition, making the container runtime API unavailable and disrupting clients like Docker Engine or Kubernetes.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:syft-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:syft-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:syft-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
A flaw was found in containerd, an open-source container runtime. The Container Runtime Interface (CRI) implementation, which allows Kubernetes to interact with container runtimes, improperly trusts Container Device Interface (CDI) annotations found within untrusted checkpoint image metadata during container restoration. This vulnerability enables a user with permissions to create pods to bypass standard Kubernetes resource allocation and device plugin enforcement. Consequently, an attacker can inject arbitrary CDI edits, such as device nodes and host mounts, into the restored container, potentially leading to unauthorized resource access or privilege escalation.
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"text": "This update includes the following RPMs:\n\nsyft:\n * syft-1.46.0-0.1.hum1 (aarch64, x86_64)\n * syft-1.46.0-0.1.hum1.src (src)",
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"title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
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"discovery_date": "2026-07-01T19:01:12.673142+00:00",
"ids": [
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"text": "2496126"
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"notes": [
{
"category": "description",
"text": "A flaw was found in containerd, an open-source container runtime. A remote attacker could exploit this vulnerability by providing a maliciously crafted image. When a container is created from this image, it leads to uncontrolled resource consumption and memory exhaustion, causing the containerd process to terminate. This results in a Denial of Service (DoS) condition, making the container runtime API unavailable and disrupting clients like Docker Engine or Kubernetes.",
"title": "Vulnerability description"
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{
"category": "summary",
"text": "github.com/containerd/containerd: containerd: Denial of Service via maliciously crafted image leading to unbounded group parsing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat\u0027s container platform uses CRI-O as its container runtime interface, not containerd. While containerd libraries are bundled in some images for OCI image operations (e.g., estargz support via skopeo), the containerd daemon and its CRI plugin (where the vulnerable group-parsing code path exists) are not executed. Therefore, this vulnerability is not exploitable in Red Hat products.",
"title": "Statement"
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"category": "external",
"summary": "https://github.com/containerd/containerd/security/advisories/GHSA-jpcc-p29g-p8mq",
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"release_date": "2026-07-01T17:48:43.205000+00:00",
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"category": "vendor_fix",
"date": "2026-06-29T09:51:10+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:syft-main@aarch64",
"Red Hat Hardened Images:syft-main@src",
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"url": "https://access.redhat.com/errata/RHSA-2026:32974"
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"details": "No mitigation is needed for Red Hat products. The vulnerable code path in containerd\u0027s CRI plugin group-parsing logic is not executed because Red Hat uses CRI-O as the container runtime. Products that bundle containerd as a library dependency for OCI image operations are not affected.",
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
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],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "github.com/containerd/containerd: containerd: Denial of Service via maliciously crafted image leading to unbounded group parsing"
},
{
"cve": "CVE-2026-53492",
"cwe": {
"id": "CWE-807",
"name": "Reliance on Untrusted Inputs in a Security Decision"
},
"discovery_date": "2026-07-01T19:01:34.238078+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2496130"
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"notes": [
{
"category": "description",
"text": "A flaw was found in containerd, an open-source container runtime. The Container Runtime Interface (CRI) implementation, which allows Kubernetes to interact with container runtimes, improperly trusts Container Device Interface (CDI) annotations found within untrusted checkpoint image metadata during container restoration. This vulnerability enables a user with permissions to create pods to bypass standard Kubernetes resource allocation and device plugin enforcement. Consequently, an attacker can inject arbitrary CDI edits, such as device nodes and host mounts, into the restored container, potentially leading to unauthorized resource access or privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/containerd/containerd: containerd: Security bypass via Container Device Interface (CDI) annotation smuggling during checkpoint restoration.",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw is rated as Important. In Red Hat OpenShift Container Platform, a user with pod creation permissions could bypass standard Kubernetes resource allocation and device plugin enforcement. This is due to containerd\u0027s Container Runtime Interface (CRI) improperly trusting Container Device Interface (CDI) annotations during container restoration. Exploitation requires CDI to be enabled on the node and a matching host CDI specification for the requested device.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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],
"product_status": {
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"release_date": "2026-07-01T17:59:12.552000+00:00",
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"Red Hat Hardened Images:syft-main@src",
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"scores": [
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
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"version": "3.1"
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"threats": [
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"category": "impact",
"details": "Important"
}
],
"title": "github.com/containerd/containerd: containerd: Security bypass via Container Device Interface (CDI) annotation smuggling during checkpoint restoration."
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.