In the Linux kernel, the following vulnerability has been resolved:
ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered
If a synchronous error is detected as a result of user-space process triggering a 2-bit uncorrected error, the CPU will take a synchronous error exception such as Synchronous External Abort (SEA) on Arm64. The kernel will queue a memory_failure() work which poisons the related page, unmaps the page, and then sends a SIGBUS to the process, so that a system wide panic can be avoided.
However, no memory_failure() work will be queued when abnormal synchronous errors occur. These errors can include situations like invalid PA, unexpected severity, no memory failure config support, invalid GUID section, etc. In such a case, the user-space process will trigger SEA again. This loop can potentially exceed the platform firmware threshold or even trigger a kernel hard lockup, leading to a system reboot.
Fix it by performing a force kill if no memory_failure() work is queued for synchronous errors.
[ rjw: Changelog edits ]
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-livepatch-6.1.164-196.303Upgrade kernel6.12-libbpf-debuginfoUpgrade kernel-libbpf-debuginfoUpgrade bpftool6.12Upgrade kernel6.12-headersUpgrade kernel-headersUpgrade kernelUpgrade kernel6.12-libbpf-develUpgrade kernel-toolsUpgrade kernel6.12Upgrade kernel6.12-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modules-extra-commonUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-libbpf-develUpgrade kernel-libbpf-staticUpgrade perf6.12Upgrade bpftool-debuginfoUpgrade kernel-libbpfUpgrade kernel6.12-modules-extra-commonUpgrade python3-perfUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-develUpgrade kernel6.12-tools-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel-livepatch-6.12.46-66.121Upgrade kernel-develUpgrade kernel6.12-libbpfUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade python3-perf6.12Upgrade python3-perf-debuginfoUpgrade perf6.12-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel6.12-toolsUpgrade kernel6.12-libbpf-staticUpgrade kernel-modules-extraUpgrade bpftoolUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-tools-devel | Sep 30, 2025 | Sep 11, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Mar 16, 2026 | Mar 16, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernelUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade python3-perf | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perfUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-tools | Mar 10, 2026 | Mar 10, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Oct 16, 2025 | Sep 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 11, 2025 |
| Suse | — | Upgrade kernel-rt-livepatchUpgrade dlm-kmp-azureUpgrade dtb-amazonUpgrade kernel-default-baseUpgrade kernel-default-livepatchUpgrade dtb-caviumUpgrade dtb-marvellUpgrade dtb-apmUpgrade kernel-64kb-develUpgrade dtb-xilinxUpgrade cluster-md-kmp-azureUpgrade dtb-amdUpgrade kernel-zfcpdumpUpgrade kernel-azure-extraUpgrade dtb-hisiliconUpgrade dlm-kmp-64kbUpgrade ocfs2-kmp-azureUpgrade dtb-mediatekUpgrade dtb-freescaleUpgrade kernel-default-optionalUpgrade kselftests-kmp-defaultUpgrade dtb-lgUpgrade kernel-rt_debugUpgrade gfs2-kmp-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-default-develUpgrade dtb-allwinnerUpgrade kernel-symsUpgrade kernel-debug-develUpgrade kernel-default-livepatch-develUpgrade dtb-appleUpgrade kernel-source-azureUpgrade cluster-md-kmp-rtUpgrade dtb-armUpgrade kernel-obs-qaUpgrade kselftests-kmp-rtUpgrade reiserfs-kmp-rtUpgrade gfs2-kmp-64kbUpgrade kernel-rt-develUpgrade kernel-develUpgrade ocfs2-kmp-rtUpgrade dtb-renesasUpgrade dlm-kmp-defaultUpgrade kernel-kvmsmall-develUpgrade ocfs2-kmp-defaultUpgrade gfs2-kmp-rtUpgrade kernel-debugUpgrade dtb-socionextUpgrade kernel-default-extraUpgrade kernel-64kb-optionalUpgrade kernel-devel-rtUpgrade kernel-64kbUpgrade kernel-rt_debug-vdsoUpgrade kernel-rtUpgrade kernel-docsUpgrade dtb-rockchipUpgrade reiserfs-kmp-64kbUpgrade kernel-azureUpgrade kernel-azure-develUpgrade cluster-md-kmp-defaultUpgrade kselftests-kmp-azureUpgrade kernel-syms-rtUpgrade kernel-rt-extraUpgrade kernel-docs-htmlUpgrade dtb-exynosUpgrade dtb-alteraUpgrade kernel-debug-vdsoUpgrade kernel-azure-optionalUpgrade kernel-rt-optionalUpgrade kernel-default-manUpgrade kernel-devel-azureUpgrade gfs2-kmp-defaultUpgrade dtb-amlogicUpgrade reiserfs-kmp-azureUpgrade kernel-rt-vdsoUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt_debug-develUpgrade dlm-kmp-rtUpgrade kernel-source-vanillaUpgrade kernel-rt-livepatch-develUpgrade kernel-default-vdsoUpgrade dtb-sprdUpgrade kernel-default-base-rebuildUpgrade kernel-defaultUpgrade dtb-qcomUpgrade cluster-md-kmp-64kbUpgrade kernel-syms-azureUpgrade kernel-sourceUpgrade kernel-source-rtUpgrade dtb-nvidiaUpgrade kernel-obs-buildUpgrade dtb-broadcomUpgrade kernel-macrosUpgrade kernel-kvmsmallUpgrade kernel-azure-vdsoUpgrade ocfs2-kmp-64kbUpgrade kernel-64kb-extraUpgrade kselftests-kmp-64kb | Dec 5, 2025 | Oct 15, 2025 |
| Ubuntu | — | Upgrade linux-image-lowlatency-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-fipsUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-ibm-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-nvidia-6.8Upgrade linux-image-gke-64kUpgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-realtimeUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-kvmUpgrade linux-image-ibm-classicUpgrade linux-image-awsUpgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-azure-fipsUpgrade linux-image-oracleUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-oracle-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-raspi-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-realtime-6.8.1Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-xilinxUpgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-64kUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-genericUpgrade linux-image-azure-fips-6.8Upgrade linux-image-azureUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-raspi-realtimeUpgrade linux-image-raspiUpgrade linux-image-oem-22.04aUpgrade linux-image-ibmUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-oem-22.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-gcp-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-gkeopUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-fips-6.8Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-oracle-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidiaUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-azure-6.8 | Feb 12, 2026 | Sep 11, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Sep 11, 2025 |
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