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Microsoft Security Response CenterCVE-2026-84304

gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

Mariner

Read the vendor bulletin Get alerts for azl3 docker-cli 25.0.7-4 on Azure Linux
7.5CVSS out of 10High severity
Scope

What the vendor says is affected

  • azl3 docker-cli 25.0.7-4 on Azure Linux 3.0
  • azl3 flannel 0.24.2-29 on Azure Linux 3.0
  • azl3 kubevirt 1.7.1-8 on Azure Linux 3.0
  • azl3 multus 4.0.2-10 on Azure Linux 3.0
  • azl3 packer 1.9.5-18 on Azure Linux 3.0
  • azl3 prometheus-adapter 0.12.0-7 on Azure Linux 3.0
  • azl3 vitess 19.0.4-12 on Azure Linux 3.0
  • azl3 containerd2 2.2.4-8 on Azure Linux 3.0
  • azl3 vitess 19.0.4-13 on Azure Linux 3.0
  • azl3 azcopy 10.25.1-7 on Azure Linux 3.0
  • azl3 azurelinux-image-tools 1.6.0-1 on Azure Linux 3.0
  • azl3 cert-manager 1.12.15-11 on Azure Linux 3.0
  • azl3 cf-cli 8.7.11-8 on Azure Linux 3.0
  • azl3 cloud-provider-kubevirt 0.5.1-6 on Azure Linux 3.0
  • azl3 containerd2 2.2.4-6 on Azure Linux 3.0
  • azl3 containerized-data-importer 1.62.0-7 on Azure Linux 3.0
  • azl3 coredns 1.11.4-20 on Azure Linux 3.0
  • azl3 cri-tools 1.32.0-7 on Azure Linux 3.0
  • azl3 docker-buildx 0.14.0-16 on Azure Linux 3.0
  • azl3 docker-compose 2.27.0-13 on Azure Linux 3.0
  • azl3 etcd 3.5.33-1 on Azure Linux 3.0
  • azl3 gh 2.62.0-20 on Azure Linux 3.0
  • azl3 ignition-flatcar 2.22.0-6 on Azure Linux 3.0
  • azl3 influxdb 2.7.5-19 on Azure Linux 3.0
Next step

What the vendor recommends

See the Microsoft Security Update Guide for the update that applies to your product.

Review the complete instructions on the vendor's site
Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • CVSS changed from not listed to 7.5.
    • Added affected products: azl3 azcopy 10.25.1-8 on Azure Linux 3.0, azl3 azurelinux-image-tools 1.6.0-2 on Azure Linux 3.0, azl3 cert-manager 1.12.15-12 on Azure Linux 3.0, azl3 cloud-provider-kubevirt 0.5.1-7 on Azure Linux 3.0, azl3 containerd2....
    • Removed affected products: azl3 grpc 1.62.3-1 on Azure Linux 3.0, azl3 libcontainers-common 20240213-3 on Azure Linux 3.0.
    • Added affected products: azl3 grpc 1.62.3-1 on Azure Linux 3.0.
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-84304View CVSS, KEV, EPSS, and threat context
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