In the Linux kernel, the following vulnerability has been resolved:
vsock/virtio: bind uarg before filling zerocopy skb
virtio_transport_send_pkt_info() allocates or reuses the zerocopy uarg before entering the send loop, but virtio_transport_alloc_skb() still fills the skb before it inherits that uarg. When fixed-buffer vectored zerocopy hits MAX_SKB_FRAGS, io_sg_from_iter() may partially attach managed frags and return -EMSGSIZE. The rollback path call kfree_skb() to free an skb that carries SKBFL_MANAGED_FRAG_REFS but no uarg, so skb_release_data() falls through to ordinary frag unref.
Pass the uarg into virtio_transport_alloc_skb() and bind it immediately before virtio_transport_fill_skb(). This keeps control or no-payload skbs untouched while ensuring success and rollback share one lifetime rule.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-64k-debug-modules-coreUpgrade kernel-rt-64k-debug-modules-coreUpgrade rtlaUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-debug-uki-virtUpgrade kernel-zfcpdump-develUpgrade kernel-64k-debug-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-rt-coreUpgrade kernel-64k-debug-modulesUpgrade perfUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-64k-debug-develUpgrade kernel-debug-develUpgrade kernel-rt-64k-debug-coreUpgrade libperfUpgrade kernel-64k-modules-coreUpgrade kernel-develUpgrade kernel-cross-headersUpgrade kernel-64k-devel-matchedUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-debugUpgrade kernel-64k-modules-extraUpgrade kernel-devel-matchedUpgrade python3-perfUpgrade kernel-rt-64k-modulesUpgrade kernel-64k-debug-develUpgrade kernel-debugUpgrade kernel-uki-virtUpgrade kernel-docUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-rt-64k-debugUpgrade kernel-rt-64k-develUpgrade kernel-64k-debugUpgrade kernel-debug-devel-matchedUpgrade kernel-debug-modulesUpgrade kernel-coreUpgrade kernel-rtUpgrade kernel-toolsUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-modules-coreUpgrade kernel-zfcpdumpUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-modulesUpgrade kernel-rt-modules-coreUpgrade kernel-rt-64k-coreUpgrade kernel-zfcpdump-coreUpgrade rvUpgrade kernelUpgrade kernel-debug-modules-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-64kUpgrade kernel-debug-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-64k-modulesUpgrade kernel-rt-debug-coreUpgrade kernel-64k-coreUpgrade kernel-modules-extraUpgrade kernel-64kUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libsUpgrade kernel-modulesUpgrade kernel-rt-develUpgrade kernel-64k-develUpgrade kernel-64k-debug-coreUpgrade kernel-abi-stablelistsUpgrade kernel-headers | Oct 14, 2026 | Oct 7, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftool6.18-debuginfoUpgrade kernel6.18-tools-develUpgrade microvm-kernel6.18Upgrade kernel6.12-debuginfoUpgrade kernel6.18-headersUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-debuginfoUpgrade kernel6.18-modules-extraUpgrade kernel6.18-toolsUpgrade kernel6.12-tools-develUpgrade kernel6.18-develUpgrade perf6.18-debuginfoUpgrade bpftool6.12Upgrade python3-perf6.12Upgrade python3-perf6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.18Upgrade kernel6.12-develUpgrade kernel6.12-headersUpgrade perf6.18Upgrade kernel6.12-modules-extra-commonUpgrade bpftool6.18Upgrade kernel6.12-modules-extraUpgrade kernel-livepatch-6.12.100-125.179Upgrade kernel-livepatch-6.18.35-68.127Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18Upgrade kernel6.18-modules-extra-commonUpgrade perf6.12Upgrade python3-perf6.18-debuginfoUpgrade kernel6.18-tools-debuginfo | Aug 18, 2026 | Jul 19, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 2, 2026 | Aug 2, 2026 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 23, 2026 | Jul 19, 2026 |
| Rocky_linux | — | Upgrade kernel-zfcpdump-modules-coreUpgrade kernel-debug-modules-coreUpgrade kernel-rt-debug-coreUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-modules-extraUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-modules-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-uki-virtUpgrade kernel-rt-develUpgrade kernel-tools-debuginfoUpgrade kernel-modules-extra-matchedUpgrade kernel-debug-coreUpgrade python3-perf-debuginfoUpgrade kernel-debug-develUpgrade kernel-modules-extraUpgrade kernel-debuginfoUpgrade kernel-tools-libsUpgrade rtlaUpgrade kernelUpgrade kernel-debug-debuginfoUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debugUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-zfcpdump-modulesUpgrade perfUpgrade kernel-zfcpdumpUpgrade kernel-debug-devel-matchedUpgrade kernel-devel-matchedUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-modules-coreUpgrade rvUpgrade kernel-rt-debug-develUpgrade libperfUpgrade kernel-debuginfo-common-s390xUpgrade python3-perfUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rtUpgrade kernel-develUpgrade kernel-debugUpgrade kernel-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-modules-coreUpgrade libperf-debuginfoUpgrade kernel-zfcpdump-develUpgrade kernel-toolsUpgrade kernel-modulesUpgrade kernel-rt-modulesUpgrade kernel-rt-debuginfoUpgrade perf-debuginfoUpgrade kernel-rt-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-uki-virtUpgrade kernel-zfcpdump-devel-matched | Oct 15, 2026 | Oct 9, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-147-lowlatencyUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-azure-fipsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-6.8.0-1064-oracle-64kUpgrade linux-image-ibm-classicUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.1-1062-realtimeUpgrade linux-image-gke-64kUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-147-fipsUpgrade linux-image-awsUpgrade linux-image-raspiUpgrade linux-image-6.8.0-1067-awsUpgrade linux-image-6.8.0-1071-azureUpgrade linux-image-azure-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-gcp-fipsUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-azure-fdeUpgrade linux-image-raspi-realtimeUpgrade linux-image-virtual-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-ibm-6.8Upgrade linux-image-6.8.0-147-genericUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-aws-fips-6.8Upgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-7.0Upgrade linux-image-gcpUpgrade linux-image-6.8.0-1067-aws-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-azure-fde-7.0Upgrade linux-image-azureUpgrade linux-image-azure-fips-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-nvidia-bosUpgrade linux-image-aws-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1064-oracleUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-6.8.0-1066-gke-64kUpgrade linux-image-ibm-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-kvmUpgrade linux-image-ibmUpgrade linux-image-generic-6.8Upgrade linux-image-nvidia-tegraUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-6.8.0-1036-nvidia-tegraUpgrade linux-image-aws-64kUpgrade linux-image-gcp-64kUpgrade linux-image-azure-6.8Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-6.8.0-147-generic-64kUpgrade linux-image-6.8.0-1071-azure-fipsUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1071-gcp-64kUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-aws-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-genericUpgrade linux-image-6.8.0-1067-aws-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1067-ibmUpgrade linux-image-6.8.0-1071-gcpUpgrade linux-image-oracleUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-6.8.0-1069-azure-fdeUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-laptop-23.10Upgrade linux-image-gcp-7.0Upgrade linux-image-aws-fipsUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-6.8.0-1036-nvidia-tegra-rtUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-intel-iotgUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-fipsUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1071-gcp-fipsUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-azure-fde-6.8Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-realtimeUpgrade linux-image-generic-64kUpgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-gkeopUpgrade linux-image-gke-6.8Upgrade linux-image-gkeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-6.8.0-1066-gkeUpgrade linux-image-6.8.0-1052-gkeopUpgrade linux-image-virtualUpgrade linux-image-raspi-7.0Upgrade linux-image-6.8.0-147-lowlatency-64kUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-lts-24.04 | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 19, 2026 |
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