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-tools-develUpgrade perf-debuginfoUpgrade perfUpgrade kernel-livepatch-5.15.186-128.192Upgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade kernelUpgrade kernel-livepatch-5.10.239-236.958Upgrade kernel-develUpgrade python-perfUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-modules-extraUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-libbpf-staticUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade perf6.12Upgrade kernelUpgrade kernel-libbpf-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel-debuginfoUpgrade kernel-livepatch-6.12.35-55.103Upgrade kernel-libbpfUpgrade kernel-tools-develUpgrade kernel-modules-extraUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel6.12Upgrade perfUpgrade python3-perf6.12-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-6.1.144-170.251Upgrade python3-perfUpgrade perf-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-libbpf-debuginfoUpgrade kernel-develUpgrade bpftool | Sep 16, 2025 | Jul 25, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 28, 2025 | Jul 28, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-tools | Nov 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernel | Dec 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools | Nov 12, 2025 | Nov 6, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-tools | 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 ocfs2-kmp-rtUpgrade kernel-rt_debugUpgrade kernel-azure-vdsoUpgrade dtb-amlogicUpgrade dtb-armUpgrade kernel-default-manUpgrade kernel-docs-htmlUpgrade dtb-freescaleUpgrade dtb-qcomUpgrade kernel-sourceUpgrade kernel-source-azureUpgrade kernel-default-extraUpgrade kselftests-kmp-64kbUpgrade dtb-mediatekUpgrade kernel-default-develUpgrade dlm-kmp-64kbUpgrade kernel-64kbUpgrade kernel-symsUpgrade kernel-zfcpdumpUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-64kbUpgrade kernel-default-base-rebuildUpgrade kernel-syms-rtUpgrade cluster-md-kmp-azureUpgrade kernel-syms-azureUpgrade dlm-kmp-azureUpgrade kernel-azure-develUpgrade kernel-kvmsmallUpgrade kernel-rtUpgrade kernel-rt_debug-vdsoUpgrade dtb-exynosUpgrade kernel-obs-qaUpgrade reiserfs-kmp-azureUpgrade kernel-macrosUpgrade kernel-kvmsmall-vdsoUpgrade kernel-devel-azureUpgrade kernel-rt-livepatch-develUpgrade gfs2-kmp-rtUpgrade cluster-md-kmp-defaultUpgrade dtb-apmUpgrade kernel-rt-vdsoUpgrade dtb-marvellUpgrade kselftests-kmp-defaultUpgrade dtb-amazonUpgrade dtb-lgUpgrade ocfs2-kmp-defaultUpgrade kernel-64kb-extraUpgrade kernel-rt_debug-develUpgrade kernel-default-livepatchUpgrade kernel-azure-extraUpgrade dtb-allwinnerUpgrade dtb-amdUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-rtUpgrade gfs2-kmp-defaultUpgrade dtb-xilinxUpgrade kernel-defaultUpgrade kernel-64kb-optionalUpgrade kernel-devel-rtUpgrade kernel-develUpgrade kernel-default-baseUpgrade kernel-source-rtUpgrade kernel-default-optionalUpgrade dtb-hisiliconUpgrade dtb-appleUpgrade cluster-md-kmp-64kbUpgrade ocfs2-kmp-azureUpgrade dlm-kmp-rtUpgrade reiserfs-kmp-rtUpgrade kernel-rt-develUpgrade kernel-default-vdsoUpgrade kernel-default-livepatch-develUpgrade dtb-renesasUpgrade kernel-azureUpgrade kernel-debug-vdsoUpgrade dtb-sprdUpgrade kernel-debugUpgrade kernel-docsUpgrade kernel-azure-optionalUpgrade dtb-rockchipUpgrade ocfs2-kmp-64kbUpgrade gfs2-kmp-azureUpgrade dlm-kmp-defaultUpgrade kernel-source-vanillaUpgrade reiserfs-kmp-defaultUpgrade kernel-rt-optionalUpgrade kernel-debug-develUpgrade kernel-64kb-develUpgrade dtb-socionextUpgrade dtb-nvidiaUpgrade dtb-caviumUpgrade dtb-broadcomUpgrade dtb-alteraUpgrade kernel-rt-extraUpgrade kselftests-kmp-azureUpgrade cluster-md-kmp-rtUpgrade kernel-rt-livepatchUpgrade kernel-obs-build | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-oem-22.04cUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-fips-6.8Upgrade linux-image-oem-24.04cUpgrade linux-image-oracle-64kUpgrade linux-image-generic-6.8Upgrade linux-image-6.14.0-1014-realtimeUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.15.0-1056-xilinx-zynqmpUpgrade linux-image-aws-lts-22.04Upgrade linux-image-oem-22.04bUpgrade linux-image-oem-24.04aUpgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-1087-nvidia-lowlatencyUpgrade linux-image-awsUpgrade linux-image-aws-64kUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-5.15.0-1086-ibmUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-5.15.0-1086-raspiUpgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-1088-kvmUpgrade linux-image-gcp-5.15Upgrade linux-image-azure-lts-24.04Upgrade linux-image-6.14.0-1007-azure-nvidiaUpgrade linux-image-azure-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-aws-fips-6.8Upgrade linux-image-5.15.0-1096-azure-fipsUpgrade linux-image-5.15.0-156-lowlatency-64kUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-fips-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcpUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-5.15.0-156-fipsUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-kvmUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-156-generic-lpaeUpgrade linux-image-azure-nvidia-6.14Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-xilinxUpgrade linux-image-5.15.0-1092-awsUpgrade linux-image-realtime-5.15Upgrade linux-image-ibmUpgrade linux-image-5.15.0-1034-nvidia-tegra-igxUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-gke-5.15Upgrade linux-image-6.14.0-1018-gcpUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-156-genericUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-raspi-5.15Upgrade linux-image-aws-64k-6.14Upgrade linux-image-5.15.0-1075-gkeopUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-azure-cvmUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-5.15.0-1085-intel-iot-realtimeUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-ibm-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-oracleUpgrade linux-image-oracle-6.8Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-virtualUpgrade linux-image-oem-22.04aUpgrade linux-image-virtual-5.15Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-aws-64k-6.8Upgrade linux-image-5.15.0-156-lowlatencyUpgrade linux-image-6.14.0-1015-awsUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-5.15Upgrade linux-image-gcp-6.14Upgrade linux-image-virtual-6.14Upgrade linux-image-5.15.0-1092-gcpUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-1092-aws-fipsUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.14.0-1015-aws-64kUpgrade linux-image-intel-iotgUpgrade linux-image-6.14.0-1014-oemUpgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-5.15.0-1092-realtimeUpgrade linux-image-ibm-classicUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-gkeUpgrade linux-image-6.14.0-1014-azureUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-aws-fips-5.15Upgrade linux-image-oem-22.04dUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-raspiUpgrade linux-image-oem-22.04Upgrade linux-image-oracle-6.14Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.14.0-1018-gcp-64kUpgrade linux-image-oem-6.14Upgrade linux-image-raspi-6.14Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-5.15.0-1034-nvidia-tegra-igx-rtUpgrade linux-image-gcp-64kUpgrade 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-realtimeUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-generic-5.15Upgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.14.0-34-genericUpgrade linux-image-6.14.0-34-generic-64kUpgrade linux-image-6.14.0-1015-oracle-64kUpgrade linux-image-aws-64k-5.15Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-raspi-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidiaUpgrade linux-image-gke-64kUpgrade linux-image-generic-64k-5.15Upgrade linux-image-generic-64kUpgrade linux-image-fipsUpgrade linux-image-aws-fipsUpgrade linux-image-azureUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-6.14.0-1015-oracleUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-6.14Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-156-generic-64kUpgrade linux-image-5.15.0-1089-gkeUpgrade linux-image-ibm-5.15Upgrade linux-image-5.15.0-1090-oracleUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-realtime-6.14Upgrade linux-image-intelUpgrade linux-image-oracle-5.15Upgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-aws-6.14Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gkeopUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-fipsUpgrade linux-image-lowlatency-6.8Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-5.15.0-1096-azureUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gkeop-5.15Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.14.0-1016-raspiUpgrade linux-image-5.15.0-1045-nvidia-tegraUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-xilinx-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-lowlatency-64kUpgrade linux-image-5.15.0-1092-aws-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-gcp-6.8Upgrade linux-image-genericUpgrade linux-image-azure-6.14Upgrade linux-image-azure-5.15Upgrade linux-image-generic-64k-6.14Upgrade linux-image-kvm-5.15Upgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-1087-intel-iotgUpgrade linux-image-lowlatency-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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