In the Linux kernel, the following vulnerability has been resolved:
net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled
When booting with the 'ipv6.disable=1' parameter, the nd_tbl is never initialized because inet6_init() exits before ndisc_init() is called which initializes it. If an IPv6 packet is injected into the interface, route_shortcircuit() is called and a NULL pointer dereference happens on neigh_lookup().
BUG: kernel NULL pointer dereference, address: 0000000000000380 Oops: Oops: 0000 [#1] SMP NOPTI [...] RIP: 0010:neigh_lookup+0x20/0x270 [...] Call Trace: <TASK> vxlan_xmit+0x638/0x1ef0 [vxlan] dev_hard_start_xmit+0x9e/0x2e0 __dev_queue_xmit+0xbee/0x14e0 packet_sendmsg+0x116f/0x1930 __sys_sendto+0x1f5/0x200 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x12f/0x1590 entry_SYSCALL_64_after_hwframe+0x76/0x7e
Fix this by adding an early check on route_shortcircuit() when protocol is ETH_P_IPV6. Note that ipv6_mod_enabled() cannot be used here because VXLAN can be built-in even when IPv6 is built as a module.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.15.204-143.230Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.253-252.1015Upgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernelUpgrade kernel-tools-develUpgrade perf-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade perfUpgrade kernel-headersUpgrade kernel-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-tools-debuginfoUpgrade kernel6.12-libbpf-debuginfoUpgrade perf6.12Upgrade kernel-develUpgrade kernel6.18-debuginfo-common-aarch64Upgrade python3-perf6.18Upgrade kernel6.18-libbpf-debuginfoUpgrade kernel-libbpf-debuginfoUpgrade kernel-modules-extraUpgrade kernel6.18Upgrade perf6.18Upgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.12Upgrade kernel-livepatch-6.1.168-202.320Upgrade kernel6.12-modules-extraUpgrade kernel-libbpfUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.12-develUpgrade kernel6.12-modules-extra-commonUpgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.18-modules-extra-commonUpgrade python3-perf-debuginfoUpgrade kernel6.12-tools-develUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel6.12-headersUpgrade bpftool6.18Upgrade kernel-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel6.12Upgrade kernelUpgrade kernel6.12-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-toolsUpgrade kernel-toolsUpgrade perf6.18-debuginfoUpgrade kernel6.18-modules-extraUpgrade python3-perfUpgrade kernel6.18-toolsUpgrade kernel6.18-headersUpgrade kernel6.18-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel-livepatch-6.12.77-99.140Upgrade kernel-livepatch-6.18.20-20.229Upgrade kernel-libbpf-develUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.18-libbpf-develUpgrade kernel6.12-libbpfUpgrade perf6.12-debuginfoUpgrade kernel6.12-libbpf-staticUpgrade kernel6.18-libbpfUpgrade perf-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel-modules-extra-commonUpgrade kernel6.18-develUpgrade kernel6.12-libbpf-develUpgrade kernel6.18-tools-develUpgrade bpftool6.18-debuginfoUpgrade bpftool6.12Upgrade perfUpgrade kernel6.18-libbpf-staticUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade python3-perf6.18-debuginfo | Apr 9, 2026 | Mar 25, 2026 |
| Debian | — | Upgrade linux-6.1Upgrade linux | May 3, 2026 | May 3, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Mar 25, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-5.15.0-1108-gkeUpgrade linux-image-5.15.0-1112-aws-fipsUpgrade linux-image-5.15.0-1064-nvidia-tegraUpgrade linux-image-azure-fdeUpgrade linux-image-gcpUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-generic-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-5.15.0-1053-nvidia-tegra-igx-rtUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-1104-intel-iot-realtimeUpgrade linux-image-5.15.0-184-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-raspi-nolpaeUpgrade linux-image-gke-64k-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-gke-64kUpgrade linux-image-oracle-5.15Upgrade linux-image-awsUpgrade linux-image-aws-fips-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-1112-awsUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-5.15.0-1117-azureUpgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-generic-64k-5.15Upgrade linux-image-realtime-5.15Upgrade linux-image-6.8.0-1063-azureUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1064-nvidia-tegra-rtUpgrade linux-image-5.15.0-186-genericUpgrade linux-image-raspi-6.8Upgrade linux-image-aws-64k-5.15Upgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-1106-raspiUpgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-fips-6.8Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-5.15.0-1111-realtimeUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-ibmUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-gcp-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-oracle-6.8Upgrade linux-image-virtual-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-realtime-6.8.1Upgrade linux-image-5.15.0-1095-gkeopUpgrade linux-image-laptop-23.10Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-xilinxUpgrade linux-image-azure-5.15Upgrade linux-image-azure-fips-6.8Upgrade linux-image-5.15.0-1053-nvidia-tegra-igxUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-raspiUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-5.15.0-186-generic-64kUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oracle-64kUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-gcp-5.15Upgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-1112-gcpUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-raspi-5.15Upgrade linux-image-5.15.0-1117-azure-fipsUpgrade linux-image-6.8.0-1061-awsUpgrade linux-image-5.15.0-1109-oracleUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-xilinx-6.8Upgrade linux-image-aws-64k-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-kvmUpgrade linux-image-raspi-realtimeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-lowlatency-6.8Upgrade linux-image-azure-lts-22.04Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1059-nvidia-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-ibm-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-intelUpgrade linux-image-gke-6.8Upgrade linux-image-gke-5.15Upgrade linux-image-genericUpgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-5.15.0-1075-xilinx-zynqmpUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-kvm-5.15Upgrade linux-image-gkeUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-gkeopUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-1112-aws-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-5.15.0-1117-azure-fdeUpgrade linux-image-azure-fips-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-6.8.0-136-fipsUpgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-5.15.0-1112-gcp-fipsUpgrade linux-image-5.15.0-184-lowlatency-64kUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-fipsUpgrade linux-image-lowlatency-64kUpgrade linux-image-nvidia-5.15Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-5.15.0-1106-ibmUpgrade linux-image-5.15.0-1107-nvidia-lowlatencyUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-oem-20.04Upgrade linux-image-oem-20.04bUpgrade linux-image-5.15.0-186-fipsUpgrade linux-image-aws-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oem-22.04Upgrade linux-image-gkeop-5.15Upgrade linux-image-oem-22.04aUpgrade linux-image-azure-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-azureUpgrade linux-image-aws-64kUpgrade linux-image-intel-iotgUpgrade linux-image-azure-fde-6.8Upgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-5.15.0-1104-kvmUpgrade linux-image-virtualUpgrade linux-image-nvidiaUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-azure-fde-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-oem-20.04cUpgrade linux-image-generic-lpaeUpgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-5.15.0-1107-nvidiaUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-5.15.0-186-generic-lpaeUpgrade linux-image-oem-22.04dUpgrade linux-image-aws-fips-5.15Upgrade linux-image-generic-5.15Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-5.15.0-1107-intel-iotg | Jul 20, 2026 | Mar 25, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Mar 25, 2026 |
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