In the Linux kernel, the following vulnerability has been resolved:
rtnetlink: add missing netlink_ns_capable() check for peer netns
rtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer network namespace when creating paired devices (veth, vxcan, netkit). This allows an unprivileged user with a user namespace to create interfaces in arbitrary network namespaces, including init_net.
Add a netlink_ns_capable() check for CAP_NET_ADMIN in the peer namespace before allowing device creation to proceed.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade bpftoolUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-uki-virt-addonsUpgrade kernel-tools-libsUpgrade kernel-rt-develUpgrade kernel-64k-debug-develUpgrade kernel-rt-modulesUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-64kUpgrade kernel-develUpgrade kernel-64k-devel-matchedUpgrade kernel-64k-debug-modules-coreUpgrade kernel-rt-modules-coreUpgrade kernel-debug-modules-coreUpgrade kernel-rtUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-64k-debug-modulesUpgrade kernel-rt-modules-extraUpgrade kernel-rt-64k-debug-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-modules-coreUpgrade kernel-64k-debugUpgrade kernel-zfcpdump-devel-matchedUpgrade rvUpgrade kernel-rt-64k-coreUpgrade perfUpgrade kernel-rt-debugUpgrade kernel-64k-modules-extraUpgrade kernel-rt-64k-develUpgrade kernel-docUpgrade kernel-rt-64k-modulesUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-debug-coreUpgrade kernel-toolsUpgrade kernel-debug-develUpgrade kernel-abi-stablelistsUpgrade kernel-64k-modules-coreUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-64k-coreUpgrade libperfUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-rt-coreUpgrade kernel-rt-64k-modules-coreUpgrade kernel-modules-coreUpgrade kernel-rt-debug-develUpgrade kernel-64k-debug-modules-extraUpgrade kernel-uki-virtUpgrade kernel-rt-64k-debugUpgrade kernel-modulesUpgrade python3-perfUpgrade kernel-debugUpgrade kernel-cross-headersUpgrade kernel-headersUpgrade kernelUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-devel-matchedUpgrade kernel-64k-modulesUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-debug-uki-virtUpgrade kernel-64k-develUpgrade rtlaUpgrade kernel-debug-modulesUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-64k-debug-coreUpgrade kernel-debug-coreUpgrade kernel-devel-matchedUpgrade kernel-64kUpgrade kernel-coreUpgrade kernel-zfcpdump-develUpgrade kernel-modules-extra | Aug 2, 2026 | Jul 31, 2026 |
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-headersUpgrade kernel-livepatch-5.15.209-147.245Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-5.10.258-257.1041Upgrade perfUpgrade kernel-tools-develUpgrade kernel-debuginfoUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-4.14.355-284.735Upgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade bpftoolUpgrade bpftool-debuginfo | Jun 23, 2026 | Jun 23, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-perf6.12Upgrade kernel6.12-develUpgrade kernel6.12-tools-develUpgrade kernel6.12-headersUpgrade kernel6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade perf6.12-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-modules-extraUpgrade kernel6.12-toolsUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade bpftool6.12Upgrade kernel-livepatch-6.12.92-122.166Upgrade python3-perf6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade perf6.12Upgrade kernel6.12-debuginfo | Jun 23, 2026 | Apr 30, 2026 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | Jul 17, 2026 | Apr 30, 2026 |
| Rocky_linux | — | Upgrade rvUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-kvmUpgrade kernel-zfcpdump-modules-coreUpgrade python3-perfUpgrade kernel-tools-libs-develUpgrade perfUpgrade kernel-zfcpdump-devel-matchedUpgrade libperf-debuginfoUpgrade kernel-debug-devel-matchedUpgrade kernel-rtUpgrade bpftoolUpgrade kernel-rt-debug-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-modules-coreUpgrade kernel-zfcpdump-debuginfoUpgrade kernelUpgrade libperfUpgrade kernel-debuginfo-common-s390xUpgrade kernel-toolsUpgrade kernel-zfcpdump-coreUpgrade kernel-devel-matchedUpgrade kernel-rt-modules-extraUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debug-debuginfoUpgrade kernel-tools-libsUpgrade kernel-debug-modules-coreUpgrade kernel-zfcpdump-develUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-develUpgrade kernel-uki-virtUpgrade kernel-debugUpgrade kernel-rt-debug-modules-extraUpgrade kernel-modulesUpgrade kernel-modules-extra-matchedUpgrade kernel-debug-modulesUpgrade kernel-coreUpgrade kernel-rt-debug-develUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debug-modulesUpgrade kernel-zfcpdumpUpgrade python3-perf-debuginfoUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debugUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-uki-virtUpgrade kernel-rt-debug-kvmUpgrade kernel-modules-coreUpgrade kernel-debug-coreUpgrade kernel-rt-coreUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-debuginfoUpgrade kernel-modules-extraUpgrade kernel-debug-develUpgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debug-modules-extraUpgrade perf-debuginfoUpgrade kernel-rt-develUpgrade rtla | Jul 29, 2026 | Jul 27, 2026 |
| Ubuntu | — | Upgrade linux-nvidia | May 25, 2026 | Apr 30, 2026 |
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