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 bpftool-debuginfoUpgrade python-perfUpgrade kernel-livepatch-5.15.128-80.144Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.192-182.736Upgrade perf-debuginfoUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernelUpgrade python-perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade perfUpgrade kernel-toolsUpgrade kernel-libbpfUpgrade python3-perfUpgrade kernel-tools-develUpgrade bpftoolUpgrade kernel-libbpf-staticUpgrade kernel-develUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-6.1.49-69.116Upgrade perf-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade 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 kernel-toolsUpgrade kernel-tools-libsUpgrade python3-perfUpgrade bpftoolUpgrade kernel | Mar 10, 2026 | Mar 10, 2026 |
| Ubuntu | — | Upgrade linux-intel-iotg-5.15Upgrade linux-raspiUpgrade linux-oracle-5.15Upgrade linux-oracleUpgrade linux-xilinx-zynqmpUpgrade linux-azure-5.15Upgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-azureUpgrade linux-ibmUpgrade linux-gkeopUpgrade linux-nvidiaUpgrade linux-realtimeUpgrade linux-gcp-5.15Upgrade linux-hwe-5.15Upgrade linux-awsUpgrade linux-riscv-5.15Upgrade linux-bluefieldUpgrade linux-intel-iot-realtimeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-nvidia-tegra-igxUpgrade linux-ibm-5.15Upgrade linux-gcpUpgrade linux-nvidia-tegra-5.15Upgrade linux-nvidia-tegraUpgrade linuxUpgrade linux-gkeUpgrade linux-aws-5.15Upgrade linux-lowlatency | Sep 19, 2025 | Sep 17, 2025 |
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