In the Linux kernel, the following vulnerability has been resolved:
x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper
Since
923f3a2b48bd ("x86/resctrl: Query LLC monitoring properties once during boot")
resctrl_cpu_detect() has been moved from common CPU initialization code to the vendor-specific BSP init helper, while Hygon didn't put that call in their code.
This triggers a division by zero fault during early booting stage on our machines with X86_FEATURE_CQM* supported, where get_rdt_mon_resources() tries to calculate mon_l3_config with uninitialized boot_cpu_data.x86_cache_occ_scale.
Add the missing resctrl_cpu_detect() in the Hygon BSP init helper.
[ bp: Massage commit message. ]
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 Ami 2 | — | Upgrade kernel-tools-develUpgrade kernel-headersUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-livepatch-5.15.191-132.213Upgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.10.242-239.961Upgrade kernel-develUpgrade perf-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade bpftoolUpgrade kernel-tools | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade perf6.12Upgrade bpftool6.12-debuginfoUpgrade kernel-livepatch-6.12.46-66.121Upgrade kernel6.12-libbpf-staticUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-headersUpgrade kernel-toolsUpgrade kernel-libbpf-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-libbpfUpgrade python3-perf6.12-debuginfoUpgrade bpftool6.12Upgrade kernel6.12-libbpf-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modules-extra-commonUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade kernel6.12-tools-debuginfoUpgrade kernel-libbpf-develUpgrade perfUpgrade perf-debuginfoUpgrade kernel6.12-develUpgrade kernel-modules-extraUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.12-tools-develUpgrade kernel-tools-debuginfoUpgrade python3-perf6.12Upgrade kernel6.12-headersUpgrade python3-perfUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12Upgrade kernel-libbpfUpgrade bpftool-debuginfoUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade python3-perf-debuginfoUpgrade kernel-livepatch-6.1.150-174.273Upgrade kernel-develUpgrade bpftoolUpgrade kernel6.12-tools | Sep 30, 2025 | Sep 5, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Sep 25, 2025 | Sep 25, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perf | Dec 12, 2025 | Dec 11, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel-abi-stablelists | Jan 15, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade python3-perf | Dec 12, 2025 | Dec 11, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Nov 11, 2025 | Sep 5, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 5, 2025 |
| Suse | — | Upgrade kselftests-kmp-azureUpgrade kernel-debug-vdsoUpgrade kernel-syms-rtUpgrade dtb-allwinnerUpgrade dtb-nvidiaUpgrade kernel-rt-optionalUpgrade cluster-md-kmp-64kbUpgrade dtb-sprdUpgrade dtb-socionextUpgrade kernel-azure-optionalUpgrade dtb-marvellUpgrade ocfs2-kmp-64kbUpgrade dtb-exynosUpgrade gfs2-kmp-azureUpgrade kernel-64kbUpgrade kernel-default-develUpgrade kernel-default-baseUpgrade kernel-docs-htmlUpgrade reiserfs-kmp-rtUpgrade dlm-kmp-rtUpgrade kernel-rt-extraUpgrade kernel-rtUpgrade dtb-lgUpgrade kernel-default-vdsoUpgrade kernel-obs-buildUpgrade reiserfs-kmp-64kbUpgrade kernel-azureUpgrade kernel-azure-vdsoUpgrade gfs2-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-64kb-extraUpgrade dtb-amazonUpgrade kernel-rt_debugUpgrade dtb-appleUpgrade kernel-rt_debug-develUpgrade kernel-sourceUpgrade dtb-broadcomUpgrade kernel-default-livepatchUpgrade dtb-alteraUpgrade kernel-source-vanillaUpgrade kernel-source-rtUpgrade kernel-kvmsmall-vdsoUpgrade dtb-caviumUpgrade dtb-freescaleUpgrade ocfs2-kmp-defaultUpgrade kernel-source-azureUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-64kbUpgrade kernel-rt-livepatch-develUpgrade kernel-azure-develUpgrade kernel-azure-extraUpgrade kernel-default-livepatch-develUpgrade kernel-64kb-develUpgrade kernel-rt_debug-vdsoUpgrade ocfs2-kmp-rtUpgrade dtb-apmUpgrade kernel-docsUpgrade dtb-renesasUpgrade cluster-md-kmp-defaultUpgrade reiserfs-kmp-defaultUpgrade cluster-md-kmp-rtUpgrade dtb-hisiliconUpgrade kernel-zfcpdumpUpgrade kernel-syms-azureUpgrade kernel-debug-develUpgrade kernel-64kb-optionalUpgrade gfs2-kmp-rtUpgrade dtb-armUpgrade dtb-amdUpgrade kernel-default-base-rebuildUpgrade dlm-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade kernel-rt-develUpgrade kernel-kvmsmall-develUpgrade kernel-default-optionalUpgrade kernel-defaultUpgrade kernel-debugUpgrade cluster-md-kmp-azureUpgrade kernel-symsUpgrade kernel-macrosUpgrade kernel-devel-azureUpgrade reiserfs-kmp-azureUpgrade dtb-rockchipUpgrade kernel-devel-rtUpgrade kernel-default-extraUpgrade gfs2-kmp-64kbUpgrade dtb-qcomUpgrade dlm-kmp-azureUpgrade kselftests-kmp-rtUpgrade kernel-obs-qaUpgrade kselftests-kmp-defaultUpgrade kernel-develUpgrade kernel-rt-livepatchUpgrade kernel-kvmsmallUpgrade dtb-amlogicUpgrade dtb-xilinxUpgrade dtb-mediatek | Dec 5, 2025 | Oct 15, 2025 |
| Ubuntu | — | Upgrade linux-image-azure-lts-24.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-163-generic-lpaeUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oracle-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-raspi-6.8Upgrade linux-image-gke-64kUpgrade linux-image-5.15.0-1049-nvidia-tegra-rtUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1101-azureUpgrade linux-image-5.15.0-1097-awsUpgrade linux-image-5.15.0-1091-raspiUpgrade linux-image-5.15.0-1080-gkeopUpgrade linux-image-oem-22.04cUpgrade linux-image-oem-20.04cUpgrade linux-image-lowlatency-6.8Upgrade linux-image-kvm-5.15Upgrade linux-image-ibm-6.8Upgrade linux-image-gke-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-generic-6.8Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-generic-64k-5.15Upgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-realtime-5.15Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oem-22.04bUpgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-5.15.0-1102-azureUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-ibm-classicUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-intelUpgrade linux-image-fipsUpgrade linux-image-azure-fipsUpgrade linux-image-raspi-5.15Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-ibmUpgrade linux-image-gcp-fipsUpgrade linux-image-fips-6.8Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-gcpUpgrade linux-image-azure-6.8Upgrade linux-image-xilinxUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-1092-nvidia-lowlatencyUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-5.15.0-163-genericUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-awsUpgrade linux-image-gcp-5.15Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-5.15.0-1061-xilinx-zynqmpUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oracle-6.8Upgrade linux-image-virtualUpgrade linux-image-nvidia-6.8Upgrade linux-image-realtimeUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-aws-5.15Upgrade linux-image-5.15.0-1097-gcp-fipsUpgrade linux-image-aws-64kUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-1092-intel-iotgUpgrade linux-image-5.15.0-1101-azure-fipsUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-163-generic-64kUpgrade linux-image-5.15.0-1097-gcpUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-5.15.0-1038-nvidia-tegra-igxUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-5.15.0-1049-nvidia-tegraUpgrade linux-image-5.15.0-1097-aws-64kUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-aws-fips-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-raspi-nolpaeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-virtual-5.15Upgrade linux-image-gkeUpgrade linux-image-azure-cvmUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcp-6.8Upgrade linux-image-5.15.0-1089-intel-iot-realtimeUpgrade linux-image-oem-22.04dUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1091-ibmUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-5.15.0-1092-nvidiaUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-oem-20.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-5.15.0-163-lowlatency-64kUpgrade linux-image-ibm-5.15Upgrade linux-image-azure-fips-5.15Upgrade linux-image-5.15.0-1097-aws-fipsUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-5.15.0-1089-kvmUpgrade linux-image-kvmUpgrade linux-image-aws-64k-5.15Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-5.15.0-1093-gkeUpgrade linux-image-virtual-6.8Upgrade linux-image-xilinx-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-raspiUpgrade linux-image-oem-22.04aUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-20.04dUpgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-5.15.0-1094-oracleUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-5.15.0-1038-nvidia-tegra-igx-rtUpgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-64kUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-5.15.0-163-lowlatencyUpgrade linux-image-5.15.0-1096-realtimeUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-aws-lts-22.04Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-azure-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-realtime-6.8.1Upgrade linux-image-gkeopUpgrade linux-image-5.15.0-163-fipsUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-azureUpgrade linux-image-genericUpgrade linux-image-generic-5.15Upgrade linux-image-gke-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1046-aws | Dec 5, 2025 | Sep 5, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 7, 2025 | Sep 5, 2025 |
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