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.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade bpftoolUpgrade kernelUpgrade bpftool-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-livepatch-5.15.108-65.141Upgrade kernel-headers | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade kernel-libbpf-staticUpgrade python3-perf-debuginfoUpgrade bpftoolUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpfUpgrade bpftool-debuginfoUpgrade kernel-toolsUpgrade perfUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-livepatch-6.1.25-37.47Upgrade python3-perfUpgrade kernel-tools-develUpgrade perf-debuginfoUpgrade kernel | 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-kvmUpgrade linux-xilinx-zynqmpUpgrade linux-hwe-5.15Upgrade linux-oracleUpgrade linux-intel-iotgUpgrade linux-azure-5.15Upgrade linux-oracle-5.15Upgrade linux-gcp-5.15Upgrade linux-azure-fdeUpgrade linux-gkeopUpgrade linux-bluefieldUpgrade linux-nvidiaUpgrade linux-lowlatency-hwe-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-ibmUpgrade linux-raspiUpgrade linux-azureUpgrade linux-riscv-5.15Upgrade linux-realtimeUpgrade linuxUpgrade linux-awsUpgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegra-igxUpgrade linux-aws-5.15Upgrade linux-ibm-5.15Upgrade linux-gcpUpgrade linux-nvidia-tegraUpgrade linux-nvidia-tegra-5.15Upgrade linux-gkeUpgrade linux-lowlatency | Jan 6, 2026 | Dec 24, 2025 |
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