In the Linux kernel, the following vulnerability has been resolved:
xfrm: Wait for RCU readers during policy netns exit
xfrm_policy_fini() frees the policy_bydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their read-side critical sections first.
The policy_bydst tables are published via rcu_assign_pointer() and are looked up through rcu_dereference_check(), so netns teardown must also wait for an RCU grace period before freeing the table memory.
Fix this by adding synchronize_rcu() before freeing the policy hash tables.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-develUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade kernel-headersUpgrade kernelUpgrade kernel-livepatch-5.10.260-259.1061Upgrade bpftool-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo | Aug 5, 2026 | Aug 5, 2026 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | May 6, 2026 |
| Ubuntu | — | Upgrade linux-image-gkeopUpgrade linux-image-oem-22.04aUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-oem-20.04bUpgrade linux-image-aws-64k-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-lowlatencyUpgrade linux-image-generic-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-gke-6.8Upgrade linux-image-gke-64kUpgrade linux-image-generic-64kUpgrade linux-image-realtime-6.8.1Upgrade linux-image-raspi-6.8Upgrade linux-image-6.8.0-1063-azureUpgrade linux-image-6.8.0-1059-nvidia-64kUpgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oem-22.04cUpgrade linux-image-virtual-6.8Upgrade linux-image-oracle-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-lowlatency-64kUpgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-oem-22.04bUpgrade linux-image-nvidiaUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-azureUpgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-ibm-classicUpgrade linux-image-nvidia-64kUpgrade linux-image-ibmUpgrade linux-image-nvidia-tegraUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-ibm-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-xilinx-6.8Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-lowlatency-6.8Upgrade linux-image-genericUpgrade linux-image-aws-6.8Upgrade linux-image-azure-fdeUpgrade linux-image-raspiUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-fips-6.8Upgrade linux-image-fipsUpgrade linux-image-aws-fipsUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gkeop-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-aws-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oem-22.04dUpgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-1061-awsUpgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-oracleUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-nvidia-6.8Upgrade linux-image-gcpUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-6.8.0-136-fipsUpgrade linux-image-realtimeUpgrade linux-image-azure-fips-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-gkeUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-kvmUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-fde-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-laptop-23.10Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-virtualUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-gcp-6.8Upgrade linux-image-xilinxUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-awsUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-xilinx-zynqmp | May 25, 2026 | May 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jun 29, 2026 | May 6, 2026 |
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