RHSA-2026:71116

Vulnerability from csaf_redhat - Published: 2026-09-23 20:57 - Updated: 2026-09-29 19:01
Summary
Red Hat Security Advisory: VolSync v0.15 security fixes and container updates
Severity
Important
Notes
Topic: VolSync v0.15 General Availability release images, which provide enhancements, security fixes, and updated container images. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.
Details: VolSync v0.15 is a Kubernetes operator that enables asynchronous replication of persistent volumes within a cluster, or across clusters. After deploying the VolSync operator, it can create and maintain copies of your persistent data. For more information about VolSync, see: https://docs.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.16/html/business_continuity/business-cont-overview#volsync See the VolSync open source community website at: https://volsync.readthedocs.io/en/stable/.
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.
CVE-2026-46603

A flaw was found in golang.org/x/image/vp8l. A remote attacker can cause a denial of service by providing a specially crafted VP8L image. This image, containing many unused Huffman tree groups, leads to excessive memory allocation during VP8L decoding, resulting in memory exhaustion.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x —
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-operator-bundle@sha256:7284b648c9477346ebc5c3eb1a2693c5207bd82be8800e825f8757e49bcf064d_amd64 —
Workaround
Threats
Impact Important
CVE-2026-84445

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-125 - Out-of-bounds Read
Affected products
Fixed 4 products, the same list as for CVE-2026-46603
Known not affected 1 product, the same list as for CVE-2026-46603
Threats
Impact Important
References
To clipboard 

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          "text": "A flaw was found in golang.org/x/image/vp8l. A remote attacker can cause a denial of service by providing a specially crafted VP8L image. This image, containing many unused Huffman tree groups, leads to excessive memory allocation during VP8L decoding, resulting in memory exhaustion.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "golang.org/x/image/vp8l: golang.org/x/image/vp8l: Denial of Service via excessive memory allocation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important severity flaw due to the potential for a remote attacker to trigger a denial of service. By providing a specially crafted VP8L image, an attacker can exploit a vulnerability in `golang.org/x/image/vp8l` that causes excessive memory allocation, leading to memory exhaustion in applications processing these images. This could impact the availability of services utilizing the affected component.",
          "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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          "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46603"
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          "summary": "RHBZ#2516086",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516086"
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        {
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46603",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46603"
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          "summary": "https://go.dev/cl/793460",
          "url": "https://go.dev/cl/793460"
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          "summary": "https://go.dev/issue/80069",
          "url": "https://go.dev/issue/80069"
        },
        {
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          "summary": "https://pkg.go.dev/vuln/GO-2026-6222",
          "url": "https://pkg.go.dev/vuln/GO-2026-6222"
        }
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      "release_date": "2026-08-14T16:38:16.879000+00:00",
      "remediations": [
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          "date": "2026-09-23T20:57:25+00:00",
          "details": "For more details, see the Red Hat Advanced Cluster Management for Kubernetes documentation:\n\nhttps://docs.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.16/html/business_continuity/business-cont-overview#volsync",
          "product_ids": [
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:71116"
        },
        {
          "category": "workaround",
          "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.",
          "product_ids": [
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-operator-bundle@sha256:7284b648c9477346ebc5c3eb1a2693c5207bd82be8800e825f8757e49bcf064d_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "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": [
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-operator-bundle@sha256:7284b648c9477346ebc5c3eb1a2693c5207bd82be8800e825f8757e49bcf064d_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "golang.org/x/image/vp8l: golang.org/x/image/vp8l: Denial of Service via excessive memory allocation"
    },
    {
      "cve": "CVE-2026-84445",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2026-09-14T16:22:17.356407+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-operator-bundle@sha256:7284b648c9477346ebc5c3eb1a2693c5207bd82be8800e825f8757e49bcf064d_amd64"
          ]
        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2533175"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests",
          "title": "Vulnerability summary"
        },
        {
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64",
          "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64",
          "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le",
          "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
        ],
        "known_not_affected": [
          "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-operator-bundle@sha256:7284b648c9477346ebc5c3eb1a2693c5207bd82be8800e825f8757e49bcf064d_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "RHBZ#2533175",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533175"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-84445",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-84445",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7",
          "url": "https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4",
          "url": "https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f",
          "url": "https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/issues/9354",
          "url": "https://github.com/grpc/grpc-go/issues/9354"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/pull/9365",
          "url": "https://github.com/grpc/grpc-go/pull/9365"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/pull/9366",
          "url": "https://github.com/grpc/grpc-go/pull/9366"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/pull/9367",
          "url": "https://github.com/grpc/grpc-go/pull/9367"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/releases/tag/v1.82.2",
          "url": "https://github.com/grpc/grpc-go/releases/tag/v1.82.2"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/releases/tag/v1.83.2",
          "url": "https://github.com/grpc/grpc-go/releases/tag/v1.83.2"
        },
        {
          "category": "external",
          "summary": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj",
          "url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj"
        }
      ],
      "release_date": "2026-09-14T16:11:41.401000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-23T20:57:25+00:00",
          "details": "For more details, see the Red Hat Advanced Cluster Management for Kubernetes documentation:\n\nhttps://docs.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.16/html/business_continuity/business-cont-overview#volsync",
          "product_ids": [
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:71116"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "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": [
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-operator-bundle@sha256:7284b648c9477346ebc5c3eb1a2693c5207bd82be8800e825f8757e49bcf064d_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:28f50adaa537066260645d3ebf9fdec957046881d946d5d684940cb85b06a2e8_arm64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:87b9cd7728b598b1377c44fd0ab9300573df87031f5043aaa95118219ce15faf_amd64",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:b34206ec874e82b2d99f5d0d7ccf21bff049dd2959c93b9fb89c9b2aedce2001_ppc64le",
            "Red Hat Advanced Cluster Management for Kubernetes 2.16:registry.redhat.io/rhacm2/volsync-rhel9@sha256:e488e422ac00ac84b0bc11c06d8c54e4de6be516c832f83636d980692f5c4fdb_s390x"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests"
    }
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.