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 bpftoolUpgrade python-perfUpgrade kernelUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-livepatch-5.15.108-65.141Upgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade kernel-develUpgrade kernel-headersUpgrade perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftoolUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-libbpfUpgrade kernel-libbpf-staticUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade perfUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade kernelUpgrade python3-perfUpgrade kernel-headersUpgrade kernel-livepatch-6.1.25-37.47Upgrade kernel-libbpf-develUpgrade perf-debuginfo | 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-raspiUpgrade linux-riscv-5.15Upgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-gkeopUpgrade linux-hwe-5.15Upgrade linux-intel-iotgUpgrade linux-oracle-5.15Upgrade linux-gcp-5.15Upgrade linux-kvmUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azureUpgrade linux-intel-iotg-5.15Upgrade linux-ibmUpgrade linux-bluefieldUpgrade linux-realtimeUpgrade linux-oracleUpgrade linux-nvidia-tegra-igxUpgrade linux-aws-5.15Upgrade linux-intel-iot-realtimeUpgrade linux-awsUpgrade linux-lowlatencyUpgrade linux-gcpUpgrade linux-nvidia-tegraUpgrade linux-ibm-5.15Upgrade linux-gkeUpgrade linux-nvidia-tegra-5.15Upgrade linux | Jan 6, 2026 | Dec 24, 2025 |
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