In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_set_rbtree: fix overlap expiration walk
The lazy gc on insert that should remove timed-out entries fails to release the other half of the interval, if any.
Can be reproduced with tests/shell/testcases/sets/0044interval_overlap_0 in nftables.git and kmemleak enabled kernel.
Second bug is the use of rbe_prev vs. prev pointer. If rbe_prev() returns NULL after at least one iteration, rbe_prev points to element that is not an end interval, hence it should not be removed.
Lastly, check the genmask of the end interval if this is active in the current generation.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/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 kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-tools-develUpgrade kernelUpgrade perf-debuginfoUpgrade kernel-livepatch-5.10.192-182.736Upgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade python-perfUpgrade kernel-livepatch-5.15.128-80.144 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-perfUpgrade kernel-livepatch-6.1.49-69.116Upgrade bpftoolUpgrade kernel-libbpf-staticUpgrade kernel-toolsUpgrade kernel-libbpfUpgrade python3-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-tools-develUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-libbpf-devel | Oct 16, 2025 | Sep 16, 2025 |
| Debian | — | Upgrade linux | Sep 18, 2025 | Sep 18, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernelUpgrade kernel-tools-libs | Mar 10, 2026 | Mar 10, 2026 |
| Ubuntu | — | Upgrade linux-aws-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-nvidia-tegraUpgrade linux-riscv-5.15Upgrade linux-awsUpgrade linux-gkeUpgrade linux-nvidia-tegra-5.15Upgrade linux-intel-iot-realtimeUpgrade linux-bluefieldUpgrade linux-gcpUpgrade linux-nvidia-tegra-igxUpgrade linux-lowlatencyUpgrade linux-ibm-5.15Upgrade linuxUpgrade linux-xilinx-zynqmpUpgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-hwe-5.15Upgrade linux-azureUpgrade linux-ibmUpgrade linux-oracleUpgrade linux-raspiUpgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-realtimeUpgrade linux-oracle-5.15Upgrade linux-gkeopUpgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.15 | Sep 19, 2025 | Sep 17, 2025 |
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