In the Linux kernel, the following vulnerability has been resolved:
xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()
Fix the race by pruning the bin while still holding xfrm_policy_lock, before dropping it. Use __xfrm_policy_inexact_prune_bin() directly since the lock is already held. The wrapper xfrm_policy_inexact_prune_bin() becomes unused and is removed.
Race:
CPU0 (XFRM_MSG_DELPOLICY) CPU1 (XFRM_MSG_NEWSPDINFO) ========================== ========================== xfrm_policy_bysel_ctx(): spin_lock_bh(xfrm_policy_lock) bin = xfrm_policy_inexact_lookup() __xfrm_policy_unlink(pol) spin_unlock_bh(xfrm_policy_lock) xfrm_policy_kill(ret) // wide window, lock not held xfrm_hash_rebuild(): spin_lock_bh(xfrm_policy_lock) __xfrm_policy_inexact_flush(): kfree_rcu(bin) // bin freed spin_unlock_bh(xfrm_policy_lock) xfrm_policy_inexact_prune_bin(bin) // UAF: bin is freed
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 bpftool-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.259-258.1043Upgrade kernelUpgrade python-perfUpgrade kernel-headersUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-develUpgrade perfUpgrade kernel-livepatch-5.15.210-148.245Upgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-debuginfo | Jul 8, 2026 | Jul 8, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-toolsUpgrade kernel6.12-tools-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.18-debuginfoUpgrade kernel6.12-headersUpgrade perf6.12Upgrade kernel-livepatch-6.18.36-69.134Upgrade bpftool-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel-livepatch-6.1.176-220.358Upgrade perfUpgrade kernel-modules-extra-commonUpgrade kernel-livepatch-6.12.94-123.174Upgrade bpftool6.18-debuginfoUpgrade kernel6.18-tools-develUpgrade bpftoolUpgrade kernel6.18-develUpgrade bpftool6.18Upgrade bpftool6.12Upgrade kernel-modules-extraUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.12-tools-develUpgrade kernel6.12-develUpgrade microvm-kernel6.18Upgrade kernel6.18-toolsUpgrade kernel6.12-toolsUpgrade kernel-debuginfoUpgrade kernel6.18-headersUpgrade perf6.18-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.18Upgrade perf6.18Upgrade kernel6.12-modules-extra-commonUpgrade kernel-tools-develUpgrade perf6.12-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-modules-extraUpgrade kernel6.12-debuginfoUpgrade kernel-develUpgrade kernel6.18-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade python3-perf6.12-debuginfoUpgrade perf-debuginfoUpgrade kernel6.18Upgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12Upgrade kernel-headersUpgrade python3-perfUpgrade kernel-tools-debuginfo | Jul 8, 2026 | Jun 25, 2026 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 5, 2026 | Jul 5, 2026 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jul 17, 2026 | Jun 25, 2026 |
| Rocky_linux | — | Upgrade kernel-zfcpdump-develUpgrade kernel-zfcpdumpUpgrade kernel-zfcpdump-modulesUpgrade kernel-uki-virtUpgrade kernel-rtUpgrade bpftool-debuginfoUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-modules-coreUpgrade kernel-rt-modulesUpgrade kernel-coreUpgrade kernel-devel-matchedUpgrade perfUpgrade kernel-modules-coreUpgrade kernel-debuginfoUpgrade kernel-modulesUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-tools-debuginfoUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-debug-kvmUpgrade kernel-debug-debuginfoUpgrade kernel-modules-extraUpgrade perf-debuginfoUpgrade rvUpgrade kernel-debugUpgrade kernel-debug-develUpgrade kernel-debug-coreUpgrade kernel-toolsUpgrade kernel-uki-virt-addonsUpgrade kernel-debug-modules-extraUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debuginfoUpgrade libperfUpgrade kernel-debuginfo-common-s390xUpgrade kernel-develUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-debug-develUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-zfcpdump-devel-matchedUpgrade bpftoolUpgrade python3-perf-debuginfoUpgrade kernel-rt-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debugUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-develUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modules-coreUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-modules-extra-matchedUpgrade kernel-debug-modulesUpgrade libperf-debuginfoUpgrade rtlaUpgrade kernel-tools-libs-develUpgrade kernel-rt-modules-extraUpgrade kernel-rt-kvmUpgrade kernel-zfcpdump-debuginfoUpgrade python3-perfUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debuginfo-common-x86_64 | Sep 18, 2026 | Sep 16, 2026 |
| Ubuntu | — | Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-5.15.0-1109-intel-iot-realtimeUpgrade linux-image-generic-5.15Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-fips-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-virtualUpgrade linux-image-raspi-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-generic-lpaeUpgrade linux-image-aws-64k-5.15Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1117-aws-64kUpgrade linux-image-5.15.0-1117-awsUpgrade linux-image-gkeUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-realtimeUpgrade linux-image-ibm-5.15Upgrade linux-image-gke-5.15Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-aws-fipsUpgrade linux-image-awsUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-gcp-5.15Upgrade linux-image-5.15.0-1111-ibmUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-gcp-7.0Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-5.15.0-195-lowlatency-64kUpgrade linux-image-5.15.0-1116-realtimeUpgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1100-gkeopUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-azure-lts-26.04Upgrade linux-image-oem-20.04Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-5.15.0-1112-intel-iotgUpgrade linux-image-azure-fde-5.15Upgrade linux-image-azure-7.0Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-64kUpgrade linux-image-intelUpgrade linux-image-5.15.0-198-genericUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-7.0.0-31-genericUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-kvm-5.15Upgrade linux-image-nvidia-64kUpgrade linux-image-intel-iotgUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bosUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-5.15.0-1117-aws-fipsUpgrade linux-image-5.15.0-1123-azureUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oracle-5.15Upgrade linux-image-generic-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-198-generic-lpaeUpgrade linux-image-generic-64k-7.0Upgrade linux-image-lowlatency-5.15Upgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-gkeopUpgrade linux-image-oem-7.0Upgrade linux-image-5.15.0-1114-oracleUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-oem-26.04Upgrade linux-image-5.15.0-1123-azure-fipsUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-realtime-5.15Upgrade linux-image-aws-7.0Upgrade linux-image-oem-20.04dUpgrade linux-image-ibm-7.0Upgrade linux-image-azureUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-kvmUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-realtime-64kUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-gkeop-5.15Upgrade linux-image-aws-fips-5.15Upgrade linux-image-nvidia-7.0Upgrade linux-image-azure-fdeUpgrade linux-image-oem-26.04aUpgrade linux-image-5.15.0-195-lowlatencyUpgrade linux-image-oem-20.04bUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-5.15.0-1118-gcpUpgrade linux-image-gcpUpgrade linux-image-gke-64kUpgrade linux-image-gke-7.0Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-oracle-64kUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-virtual-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-gcp-fipsUpgrade linux-image-generic-64k-5.15Upgrade linux-image-azure-lts-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-198-fipsUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-azure-5.15Upgrade linux-image-5.15.0-1113-gkeUpgrade linux-image-5.15.0-1122-azure-fdeUpgrade linux-image-gke-64k-7.0Upgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-oem-20.04cUpgrade linux-image-genericUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-raspiUpgrade linux-image-virtual-7.0Upgrade linux-image-ibmUpgrade linux-image-5.15.0-1080-xilinx-zynqmpUpgrade linux-image-lowlatency-64kUpgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-oem-26.04bUpgrade linux-image-fipsUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtime-7.0Upgrade linux-image-azure-fipsUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-1109-kvmUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidiaUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-aws-5.15Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-5.15.0-198-generic-64kUpgrade linux-image-5.15.0-1118-gcp-fipsUpgrade linux-image-oracle | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | Jun 25, 2026 |
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