In the Linux kernel, the following vulnerability has been resolved:
ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()
Reported by Sashiko:
The function ipv6_hop_ioam() accesses __in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned idev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr via RCU, __in6_dev_get() can return NULL during interface teardown, which could cause a NULL pointer dereference when processing an IOAM Hop-by-Hop option.
Let's add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perf-debuginfoUpgrade kernel-livepatch-5.15.210-148.245Upgrade kernel-debuginfoUpgrade kernel-headersUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade kernelUpgrade bpftool | Aug 2, 2026 | Aug 2, 2026 |
| Amazon_linux_2023 | — | Upgrade perf-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-develUpgrade kernel-modules-extra-commonUpgrade perf6.18Upgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-tools-develUpgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade bpftool6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python3-perf6.18Upgrade kernel-livepatch-6.18.35-68.127Upgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-toolsUpgrade bpftoolUpgrade kernel6.18Upgrade kernel-tools-debuginfoUpgrade perfUpgrade microvm-kernel6.18Upgrade kernel-headersUpgrade perf6.18-debuginfoUpgrade kernel-livepatch-6.1.176-220.358Upgrade kernel-tools-develUpgrade python3-perf-debuginfoUpgrade kernel6.18-modules-extraUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel6.18-headersUpgrade kernel | Aug 10, 2026 | Jul 19, 2026 |
| Debian | — | Upgrade linux | Jul 20, 2026 | Jul 20, 2026 |
| Redhat_linux | — | No solution exists | Jul 21, 2026 | Jul 19, 2026 |
| Ubuntu | — | Upgrade linux-image-generic-lpaeUpgrade linux-image-azure-fde-7.0Upgrade linux-image-gcp-64kUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-gcp-7.0Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1062-nvidia-lowlatencyUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1061-oracle-64kUpgrade linux-image-fipsUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-2053-raspi-realtimeUpgrade linux-image-nvidia-7.0Upgrade linux-image-6.8.0-139-lowlatencyUpgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1062-gke-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-kvmUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-ibmUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1067-gcpUpgrade linux-image-aws-64k-7.0Upgrade linux-image-awsUpgrade linux-image-gke-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-6.8Upgrade linux-image-realtimeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-nvidia-bosUpgrade linux-image-raspiUpgrade linux-image-oracleUpgrade linux-image-oracle-7.0Upgrade linux-image-gcp-fipsUpgrade linux-image-gkeop-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-gcp-6.8Upgrade linux-image-raspi-7.0Upgrade linux-image-6.8.0-1067-azureUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1067-gcp-fipsUpgrade linux-image-ibm-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1062-gkeUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1064-ibmUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-aws-7.0Upgrade linux-image-azure-lts-24.04Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-intel-iotgUpgrade linux-image-nvidia-tegraUpgrade linux-image-6.8.0-139-fipsUpgrade linux-image-xilinxUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-azureUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-1062-nvidia-lowlatency-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1067-gcp-64kUpgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-raspi-6.8Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-laptop-23.10Upgrade linux-image-realtime-6.8.1Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-gkeopUpgrade linux-image-aws-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-6.8.0-1036-xilinxUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-6.8.0-1062-nvidia-64kUpgrade linux-image-gkeUpgrade linux-image-lowlatency-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-generic-64kUpgrade linux-image-genericUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-6.8.1-1059-realtimeUpgrade linux-image-6.8.0-1061-oracleUpgrade linux-image-6.8.0-1049-gkeopUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-6.8.0-139-lowlatency-64kUpgrade linux-image-6.8.0-1064-raspiUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-6.8.0-139-genericUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1067-azure-fipsUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-azure-7.0Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-ibm-7.0Upgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-gke-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-gke-64k-6.8Upgrade linux-image-6.8.0-1062-nvidiaUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-nvidiaUpgrade linux-image-virtualUpgrade linux-image-6.8.0-139-generic-64k | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 27, 2026 | Jul 19, 2026 |
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