RHSA-2026:93696

Vulnerability from csaf_redhat - Published: 2026-11-02 12:28 - Updated: 2026-11-13 03:36
Summary
Red Hat Security Advisory: OpenShift Virtualization v4.14 Images
Severity
Important
Notes
Topic: Red Hat OpenShift Virtualization release v4.14 is now available with updates to packages and images that fix several bugs and add enhancements.
Details: OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform. This advisory contains OpenShift Virtualization v4.14 images.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

A flaw was found in the `encoding/asn1` package in Go. An attacker could provide a specially crafted, deeply-nested Abstract Syntax Notation One (ASN.1) structure, leading to excessive recursion during the `Unmarshal` operation. This could result in stack exhaustion and a Denial of Service (DoS) condition.

CWE-776 - Improper Restriction of Recursive Entity References in DTDs
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Container Native Virtualization 4.14:registry.redhat.io/container-native-virtualization/kubevirt-apiserver-proxy-rhel9@sha256:34e48d233239616e10c95d0665aea21b4118ec7dc36a7d0bd5f625832db7e7a2_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.14:registry.redhat.io/container-native-virtualization/kubevirt-apiserver-proxy-rhel9@sha256:809ed46bd661d36067144329d53679d1bb21630e734e8ba65fd5bcba903094c7_arm64 —
Vendor Fix fix
Workaround
Threats
Impact Important

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      "cwe": {
        "id": "CWE-776",
        "name": "Improper Restriction of Recursive Entity References in DTDs"
      },
      "discovery_date": "2026-08-13T22:12:37.151735+00:00",
      "ids": [
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          "text": "2515815"
        }
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          "text": "A flaw was found in the `encoding/asn1` package in Go. An attacker could provide a specially crafted, deeply-nested Abstract Syntax Notation One (ASN.1) structure, leading to excessive recursion during the `Unmarshal` operation. This could result in stack exhaustion and a Denial of Service (DoS) condition.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important denial of service flaw in the Go encoding/asn1 package, as it can be triggered remotely without authentication. An attacker can provide a malformed ASN.1 structure, causing excessive recursion during unmarshalling and leading to stack exhaustion, which can render the service unavailable.",
          "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.",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33818"
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          "summary": "https://go.dev/cl/814980",
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          "summary": "https://go.dev/issue/80405",
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          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
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      "scores": [
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          "cvss_v3": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal"
    }
  ]
}



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