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In the Linux kernel, the following vulnerability has been resolved:
fs: drop peer group ids under namespace lock
When cleaning up peer group ids in the failure path we need to make sure to hold on to the namespace lock. Otherwise another thread might just turn the mount from a shared into a non-shared mount concurrently.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade kernel-toolsUpgrade kernel-debuginfoUpgrade bpftoolUpgrade perfUpgrade kernel-headersUpgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-5.15.108-65.141Upgrade kernel-tools-develUpgrade python-perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade bpftoolUpgrade kernel-libbpf-staticUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-livepatch-6.1.25-37.47Upgrade python3-perfUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade perf | Feb 20, 2026 | Dec 24, 2025 |
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-azure-5.15Upgrade linux-nvidiaUpgrade linux-ibmUpgrade linux-intel-iotg-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-riscv-5.15Upgrade linux-azureUpgrade linux-realtimeUpgrade linux-gkeopUpgrade linux-intel-iotgUpgrade linux-oracle-5.15Upgrade linux-azure-fdeUpgrade linux-gcp-5.15Upgrade linux-kvmUpgrade linux-oracleUpgrade linux-xilinx-zynqmpUpgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-gkeUpgrade linux-nvidia-tegra-5.15Upgrade linux-gcpUpgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegra-igxUpgrade linux-aws-5.15Upgrade linuxUpgrade linux-ibm-5.15Upgrade linux-nvidia-tegraUpgrade linux-awsUpgrade linux-lowlatency | Jan 6, 2026 | Dec 24, 2025 |
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