In the Linux kernel, the following vulnerability has been resolved:
perf: Fix sample vs do_exit()
Baisheng Gao reported an ARM64 crash, which Mark decoded as being a synchronous external abort -- most likely due to trying to access MMIO in bad ways.
The crash further shows perf trying to do a user stack sample while in exit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address space it is trying to access.
It turns out that we stop perf after we tear down the userspace mm; a receipie for disaster, since perf likes to access userspace for various reasons.
Flip this order by moving up where we stop perf in do_exit().
Additionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER to abort when the current task does not have an mm (exit_mm() makes sure to set current->mm = NULL; before commencing with the actual teardown). Such that CPU wide events don't trip on this same problem.
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-livepatch-5.15.186-128.192Upgrade kernel-headersUpgrade kernel-tools-develUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade perfUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-livepatch-5.10.239-236.958Upgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf6.12Upgrade kernel-modules-extraUpgrade kernel-tools-develUpgrade python3-perf-debuginfoUpgrade bpftoolUpgrade kernel-develUpgrade kernel-libbpf-debuginfoUpgrade perf-debuginfoUpgrade kernel-livepatch-6.1.144-170.251Upgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perfUpgrade perf6.12-debuginfoUpgrade kernel-libbpfUpgrade kernel-livepatch-6.12.35-55.103Upgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel6.12Upgrade python3-perf6.12-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-toolsUpgrade perf6.12Upgrade bpftool-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade kernel-modules-extra-commonUpgrade kernel6.12-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade kernel-headers | Sep 16, 2025 | Jul 25, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 28, 2025 | Jul 28, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelists | Nov 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel | Dec 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade python3-perf | Nov 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perf | Nov 21, 2025 | Nov 6, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Sep 10, 2025 | Jul 25, 2025 |
| Redhat_linux | — | No solution exists | Jul 31, 2025 | Jul 25, 2025 |
| Suse | — | Upgrade dtb-lgUpgrade dtb-marvellUpgrade dtb-amazonUpgrade kernel-macrosUpgrade gfs2-kmp-rtUpgrade cluster-md-kmp-defaultUpgrade kernel-azure-develUpgrade kernel-kvmsmallUpgrade dlm-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-vdsoUpgrade kernel-rt_debug-vdsoUpgrade dtb-qcomUpgrade dtb-armUpgrade kernel-obs-qaUpgrade dtb-freescaleUpgrade kernel-64kbUpgrade kernel-kvmsmall-develUpgrade kernel-azure-vdsoUpgrade kernel-docs-htmlUpgrade dlm-kmp-64kbUpgrade dtb-amlogicUpgrade kernel-default-base-rebuildUpgrade gfs2-kmp-64kbUpgrade kernel-syms-rtUpgrade cluster-md-kmp-azureUpgrade dtb-mediatekUpgrade kernel-source-azureUpgrade kselftests-kmp-64kbUpgrade kernel-default-manUpgrade kernel-rt_debugUpgrade dtb-apmUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-azureUpgrade kernel-default-develUpgrade kernel-rt-livepatch-develUpgrade kselftests-kmp-defaultUpgrade dtb-exynosUpgrade kernel-default-extraUpgrade kernel-rtUpgrade kernel-devel-azureUpgrade kernel-sourceUpgrade kernel-symsUpgrade kernel-syms-azureUpgrade ocfs2-kmp-rtUpgrade kernel-rt-develUpgrade kernel-default-vdsoUpgrade dtb-caviumUpgrade kernel-source-rtUpgrade dtb-hisiliconUpgrade reiserfs-kmp-rtUpgrade kernel-default-livepatch-develUpgrade dtb-renesasUpgrade dlm-kmp-rtUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-rtUpgrade gfs2-kmp-defaultUpgrade dtb-xilinxUpgrade dtb-amdUpgrade reiserfs-kmp-defaultUpgrade kernel-source-vanillaUpgrade kernel-rt-optionalUpgrade kernel-rt-extraUpgrade kernel-64kb-develUpgrade dtb-socionextUpgrade dtb-nvidiaUpgrade kselftests-kmp-azureUpgrade kernel-rt-livepatchUpgrade kernel-obs-buildUpgrade kernel-default-livepatchUpgrade cluster-md-kmp-rtUpgrade kernel-debug-develUpgrade dtb-broadcomUpgrade dtb-alteraUpgrade kernel-azure-extraUpgrade dtb-allwinnerUpgrade dlm-kmp-defaultUpgrade ocfs2-kmp-64kbUpgrade kernel-debug-vdsoUpgrade kernel-azureUpgrade dtb-rockchipUpgrade kernel-azure-optionalUpgrade kernel-docsUpgrade kernel-debugUpgrade gfs2-kmp-azureUpgrade ocfs2-kmp-defaultUpgrade kernel-rt_debug-develUpgrade kernel-devel-rtUpgrade kernel-develUpgrade kernel-defaultUpgrade dtb-sprdUpgrade kernel-64kb-extraUpgrade kernel-default-baseUpgrade kernel-64kb-optionalUpgrade ocfs2-kmp-azureUpgrade dtb-appleUpgrade cluster-md-kmp-64kbUpgrade kernel-default-optional | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-6.14.0-1007-azure-nvidiaUpgrade linux-image-fips-6.8Upgrade linux-image-gcp-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-nvidia-64kUpgrade linux-image-generic-6.8Upgrade linux-image-5.15.0-1056-xilinx-zynqmpUpgrade linux-image-5.15.0-1087-nvidia-lowlatencyUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-5.15.0-1088-kvmUpgrade linux-image-oem-22.04cUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-6.14.0-1014-realtimeUpgrade linux-image-5.15.0-156-generic-lpaeUpgrade linux-image-azure-nvidia-6.14Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-aws-lts-22.04Upgrade linux-image-oem-22.04bUpgrade linux-image-fips-5.15Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-azure-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-5.15.0-156-genericUpgrade linux-image-azure-cvmUpgrade linux-image-raspi-5.15Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-gke-5.15Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-oracle-6.8Upgrade linux-image-5.15.0-1085-intel-iot-realtimeUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-virtualUpgrade linux-image-5.15.0-1075-gkeopUpgrade linux-image-virtual-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-realtime-5.15Upgrade linux-image-5.15.0-156-fipsUpgrade linux-image-nvidia-5.15Upgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-oracleUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-oem-24.04bUpgrade linux-image-oem-24.04cUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-aws-64kUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-1086-ibmUpgrade linux-image-5.15.0-1086-raspiUpgrade linux-image-5.15.0-156-lowlatencyUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-6.14.0-1018-gcpUpgrade linux-image-5.15.0-1092-gcpUpgrade linux-image-5.15.0-1092-aws-fipsUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-ibmUpgrade linux-image-virtual-6.14Upgrade linux-image-gcp-6.14Upgrade linux-image-5.15.0-1034-nvidia-tegra-igxUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.14.0-1015-awsUpgrade linux-image-awsUpgrade linux-image-ibm-classicUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-5.15.0-156-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-gke-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-azure-nvidiaUpgrade linux-image-intel-iotgUpgrade linux-image-aws-lts-24.04Upgrade linux-image-5.15.0-1096-azure-fipsUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-5.15.0-1092-realtimeUpgrade linux-image-ibm-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-6.14.0-1014-oemUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-5.15.0-1092-awsUpgrade linux-image-aws-64k-6.14Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-xilinxUpgrade linux-image-6.14.0-1015-aws-64kUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-6.14.0-34-genericUpgrade linux-image-generic-64kUpgrade linux-image-nvidiaUpgrade linux-image-generic-6.14Upgrade linux-image-oracle-5.15Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-realtimeUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-5.15.0-1034-nvidia-tegra-igx-rtUpgrade linux-image-realtime-6.14Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-lpaeUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-aws-6.14Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.14.0-1016-raspiUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-5.15.0-1045-nvidia-tegraUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-xilinx-6.8Upgrade linux-image-realtime-6.8.1Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-oem-22.04dUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-lowlatency-64kUpgrade linux-image-kvm-5.15Upgrade linux-image-generic-64k-6.14Upgrade linux-image-genericUpgrade linux-image-gcp-6.8Upgrade linux-image-azure-6.14Upgrade linux-image-azure-5.15Upgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-1092-aws-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-raspiUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-gke-64kUpgrade linux-image-aws-fipsUpgrade linux-image-oem-24.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-raspi-6.8Upgrade linux-image-generic-64k-5.15Upgrade linux-image-nvidia-6.8Upgrade linux-image-fipsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-5.15.0-1087-intel-iotgUpgrade linux-image-6.14.0-1015-oracleUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-5.15.0-156-generic-64kUpgrade linux-image-aws-64k-5.15Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-azureUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1090-oracleUpgrade linux-image-intelUpgrade linux-image-5.15.0-1089-gkeUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-ibm-5.15Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.14.0-34-generic-64kUpgrade linux-image-6.14.0-1015-oracle-64kUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-lowlatency-5.15Upgrade linux-image-gkeopUpgrade linux-image-gcp-fipsUpgrade linux-image-aws-fips-5.15Upgrade linux-image-5.15.0-1096-azureUpgrade linux-image-oracle-6.14Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-virtual-6.8Upgrade linux-image-6.14.0-1018-gcp-64kUpgrade linux-image-6.14.0-1014-azureUpgrade linux-image-5.15.0-1092-gcp-fipsUpgrade linux-image-5.15.0-1087-nvidiaUpgrade linux-image-5.15.0-1045-nvidia-tegra-rtUpgrade linux-image-raspi-6.14Upgrade linux-image-oem-6.14Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-generic-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-aws-5.15 | Jul 31, 2025 | Jul 25, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 10, 2025 | Jul 25, 2025 |
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