CVE-2026-84304
Description
gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvMsg in recvBuffer, so millions of one-byte frames can consume disproportionate heap memory even when payload bytes remain within connection and stream flow-control windows. An unauthenticated remote attacker can use concurrent multiplexed streams to exhaust process memory and cause a runtime panic or out-of-memory termination. Receive-buffer compaction is enabled by default and can be controlled temporarily with GRPC_GO_EXPERIMENTAL_ENABLE_RECEIVE_BUFFER_COMPACTION. This issue is fixed in version 1.83.1.
How to fix
- google.golang.org/grpc1.83.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| google.golang.org/grpcGo | v < 1.83.1 | 1.83.1 |
| microsoft azl3_docker-cli_25.0.7-4 | No range specified | — |
| microsoft azl3_flannel_0.24.2-29 | No range specified | — |
| microsoft azl3_kubevirt_1.7.1-8 | No range specified | — |
| microsoft azl3_multus_4.0.2-10 | No range specified | — |
| microsoft azl3_packer_1.9.5-18 | No range specified | — |
| microsoft azl3_prometheus-adapter_0.12.0-7 | No range specified | — |
| microsoft azl3_vitess_19.0.4-12 | No range specified | — |
| microsoft azl3_containerd2_2.2.4-8 | No range specified | — |
| microsoft azl3_vitess_19.0.4-13 | No range specified | — |
| microsoft azl3_docker-compose_2.27.0-14 | No range specified | — |
| microsoft azl3_keda_2.14.1-19 | No range specified | — |
| microsoft azl3_kubernetes_1.30.10-30 | No range specified | — |
| microsoft azl3_azcopy_10.25.1-7 | No range specified | — |
| microsoft azl3_azurelinux-image-tools_1.6.0-1 | No range specified | — |
| microsoft azl3_cert-manager_1.12.15-11 | No range specified | — |
| microsoft azl3_cloud-provider-kubevirt_0.5.1-6 | No range specified | — |
| microsoft azl3_containerd2_2.2.4-6 | No range specified | — |
| microsoft azl3_containerized-data-importer_1.62.0-7 | No range specified | — |
| microsoft azl3_coredns_1.11.4-20 | No range specified | — |
| microsoft azl3_cri-tools_1.32.0-7 | No range specified | — |
| microsoft azl3_docker-buildx_0.14.0-16 | No range specified | — |
| microsoft azl3_docker-compose_2.27.0-13 | No range specified | — |
| microsoft azl3_etcd_3.5.33-1 | No range specified | — |
| microsoft azl3_gh_2.62.0-20 | No range specified | — |
| microsoft azl3_influxdb_2.7.5-19 | No range specified | — |
| microsoft azl3_kata-containers_3.32.0.kata0-2 | No range specified | — |
| microsoft azl3_kata-containers-cc_3.15.0.aks0-16 | No range specified | — |
| microsoft azl3_keda_2.14.1-16 | No range specified | — |
| microsoft azl3_kube-vip-cloud-provider_0.0.10-7 | No range specified | — |
| microsoft azl3_kubernetes_1.30.10-27 | No range specified | — |
| microsoft azl3_moby-containerd-cc_1.7.7-16 | No range specified | — |
| microsoft azl3_moby-engine_25.0.3-19 | No range specified | — |
| microsoft azl3_skopeo_1.14.4-12 | No range specified | — |
| microsoft azl3_sriov-network-device-plugin_3.7.0-7 | No range specified | — |
| microsoft azl3_telegraf_1.31.0-28 | No range specified | — |
| microsoft azl3_azcopy_10.25.1-8 | No range specified | — |
| microsoft azl3_azurelinux-image-tools_1.6.0-2 | No range specified | — |
| microsoft azl3_flannel_0.24.2-31 | No range specified | — |
| microsoft azl3_gh_2.98.0-1 | No range specified | — |
| microsoft azl3_kata-containers_3.32.0.kata0-5 | No range specified | — |
| microsoft azl3_kata-containers-cc_3.15.0.aks0-20 | No range specified | — |
| microsoft azl3_keda_2.14.1-18 | No range specified | — |
| microsoft azl3_kubernetes_1.30.10-29 | No range specified | — |
| microsoft azl3_kubevirt_1.8.4-1 | No range specified | — |
| microsoft azl3_moby-engine_25.0.3-20 | No range specified | — |
| microsoft azl3_packer_1.9.5-20 | No range specified | — |
| microsoft azl3_telegraf_1.31.0-31 | No range specified | — |
| microsoft azl3_containerd2_2.3.4-1 | No range specified | — |
| microsoft azl3_cri-tools_1.32.0-8 | No range specified | — |
| microsoft azl3_docker-buildx_0.14.0-17 | No range specified | — |
| microsoft azl3_flannel_0.24.2-32 | No range specified | — |
| microsoft azl3_kubevirt_1.8.4-2 | No range specified | — |
| microsoft azl3_moby-containerd-cc_1.7.7-17 | No range specified | — |
| microsoft azl3_packer_1.9.5-21 | No range specified | — |
| microsoft azl3_kubevirt-openvmm_1.9.0-1 | No range specified | — |
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