In the Linux kernel, the following vulnerability has been resolved:
vsock/virtio: fix potential unbounded skb queue
virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc.
virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM.
If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0.
Fix this by estimating the skb metadata size:
(Number of skbs in the queue) * SKB_TRUESIZE(0)
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-modules-extraUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.18-tools-develUpgrade kernel6.18-develUpgrade bpftool6.18Upgrade kernel6.12-toolsUpgrade perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-develUpgrade microvm-kernel6.18Upgrade kernel6.12-headersUpgrade kernel6.18-modules-extra-commonUpgrade perf6.18Upgrade kernel6.18Upgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-tools-develUpgrade python3-perf6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12Upgrade bpftool6.12Upgrade kernel6.18-toolsUpgrade kernel-livepatch-6.18.36-69.134Upgrade bpftool6.18-debuginfoUpgrade perf6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade perf6.18-debuginfoUpgrade kernel-livepatch-6.12.94-123.174Upgrade kernel6.18-headersUpgrade bpftool6.12-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade python3-perf6.12-debuginfoUpgrade kernel6.18-tools-debuginfo | Jul 21, 2026 | Jun 25, 2026 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Ubuntu | — | Upgrade linux-image-aws-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-nvidia-64kUpgrade linux-image-oracleUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-virtualUpgrade linux-image-virtual-7.0Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtime-64kUpgrade linux-image-generic-64k-7.0Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-raspi-7.0Upgrade linux-image-gkeUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-gcpUpgrade linux-image-raspi-realtimeUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-realtimeUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-awsUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-nvidia-bosUpgrade linux-image-oem-26.04Upgrade linux-image-7.0.0-1012-awsUpgrade linux-image-oracle-7.0Upgrade linux-image-gke-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-nvidia-7.0Upgrade linux-image-genericUpgrade linux-image-azure-lts-26.04Upgrade linux-image-azure-7.0Upgrade linux-image-oem-26.04bUpgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-ibmUpgrade linux-image-gke-7.0Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-nvidiaUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-generic-64kUpgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-raspiUpgrade linux-image-oem-7.0Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-gke-64k-7.0Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-ibm-7.0Upgrade linux-image-azureUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-oem-26.04a | Sep 14, 2026 | Sep 7, 2026 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub