In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
Sashiko pointed out that there are a few lockless RCU readers using test_bit() which is a relaxed atomic operation and provides no memory barrier guarantees. Use test_bit_acquire() instead where the operation may run parallel with add/del/gc, i.e. is not one from the next cases
- protected by region lock - in a set destroy phase - in a new/temporary set creation phase
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modules-extra-commonUpgrade python3-perfUpgrade kernel-livepatch-6.1.180-225.360Upgrade kernel-develUpgrade bpftoolUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-modules-extraUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade perfUpgrade bpftool-debuginfoUpgrade python3-perf-debuginfo | Sep 1, 2026 | Aug 15, 2026 |
| Debian | — | Upgrade linux | Aug 16, 2026 | Aug 16, 2026 |
| Redhat_linux | — | No solution exists | Aug 19, 2026 | Aug 15, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-rt-6.8No solution existsUpgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-nvidia-tegra-6.8 | Sep 21, 2026 | Sep 18, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 21, 2026 | Aug 15, 2026 |
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