In the Linux kernel, the following vulnerability has been resolved:
powerpc/kexec: Enable SMT before waking offline CPUs
If SMT is disabled or a partial SMT state is enabled, when a new kernel image is loaded for kexec, on reboot the following warning is observed:
kexec: Waking offline cpu 228. WARNING: CPU: 0 PID: 9062 at arch/powerpc/kexec/core_64.c:223 kexec_prepare_cpus+0x1b0/0x1bc [snip] NIP kexec_prepare_cpus+0x1b0/0x1bc LR kexec_prepare_cpus+0x1a0/0x1bc Call Trace: kexec_prepare_cpus+0x1a0/0x1bc (unreliable) default_machine_kexec+0x160/0x19c machine_kexec+0x80/0x88 kernel_kexec+0xd0/0x118 __do_sys_reboot+0x210/0x2c4 system_call_exception+0x124/0x320 system_call_vectored_common+0x15c/0x2ec
This occurs as add_cpu() fails due to cpu_bootable() returning false for CPUs that fail the cpu_smt_thread_allowed() check or non primary threads if SMT is disabled.
Fix the issue by enabling SMT and resetting the number of SMT threads to the number of threads per core, before attempting to wake up all present CPUs.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-tools-develUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool6.12Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade perf6.12Upgrade kernel6.12-toolsUpgrade kernel6.12-headersUpgrade kernel6.12-debuginfoUpgrade python3-perf6.12Upgrade bpftool6.12-debuginfoUpgrade kernel-livepatch-6.12.64-87.122Upgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12Upgrade kernel6.12-libbpfUpgrade kernel6.12-develUpgrade perf6.12-debuginfo | Feb 20, 2026 | Jan 14, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Feb 11, 2026 | Feb 11, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 14, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-6.8.0-1054-azureUpgrade linux-image-aws-fipsUpgrade linux-image-azureUpgrade linux-image-nvidia-tegraUpgrade linux-image-raspiUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-generic-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-realtime-6.17Upgrade linux-image-oracle-64k-6.17Upgrade linux-image-6.8.0-1052-awsUpgrade linux-image-gcp-fipsUpgrade linux-image-6.17.0-1012-gcpUpgrade linux-image-6.8.0-1054-gcpUpgrade linux-image-azure-fipsUpgrade linux-image-raspi-6.8Upgrade linux-image-gke-64kUpgrade linux-image-6.8.0-1029-xilinxUpgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-1051-ibmUpgrade linux-image-aws-fips-6.8Upgrade linux-image-gcp-64k-6.17Upgrade linux-image-6.8.0-1037-gkeopUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.17.0-1014-raspiUpgrade linux-image-generic-64k-6.17Upgrade linux-image-6.8.0-1049-oracleUpgrade linux-image-6.8.0-1051-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-2042-raspi-realtimeUpgrade linux-image-6.17.0-1012-aws-64kUpgrade linux-image-6.8.0-110-lowlatencyUpgrade linux-image-oem-24.04cUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-gke-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-kvmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.8.0-1050-gke-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-aws-64k-6.17Upgrade linux-image-6.17.0-1013-azureUpgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-22.04cUpgrade linux-image-aws-6.8Upgrade linux-image-gcp-6.17Upgrade linux-image-oracle-6.8Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.1-1047-realtimeUpgrade linux-image-virtual-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-gkeopUpgrade linux-image-virtual-6.17Upgrade linux-image-6.8.0-1052-raspiUpgrade linux-image-6.8.0-110-generic-64kUpgrade linux-image-6.8.0-1052-aws-64kUpgrade linux-image-6.17.0-22-genericUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-raspi-realtimeUpgrade linux-image-generic-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-110-genericUpgrade linux-image-6.8.0-1051-nvidiaUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-gkeUpgrade linux-image-gkeop-6.8Upgrade linux-image-oem-24.04aUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-110-fipsUpgrade linux-image-generic-6.17Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-ibmUpgrade linux-image-6.8.0-1054-gcp-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1022-nvidia-tegra-rtUpgrade linux-image-6.17.0-1020-oemUpgrade linux-image-oracle-6.17Upgrade linux-image-oem-22.04bUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1051-nvidia-lowlatencyUpgrade linux-image-oem-24.04Upgrade linux-image-oem-6.17Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1049-oracle-64kUpgrade linux-image-6.8.0-1022-nvidia-tegraUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-fipsUpgrade linux-image-6.8.0-1050-gkeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-xilinxUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-24.04bUpgrade linux-image-oem-22.04Upgrade linux-image-nvidiaUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-fips-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-1052-aws-fipsUpgrade linux-image-6.17.0-1011-oracleUpgrade linux-image-6.8.0-110-lowlatency-64kUpgrade linux-image-oracleUpgrade linux-image-gcp-6.8Upgrade linux-image-gcpUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-intel-iotgUpgrade linux-image-6.17.0-22-generic-64kUpgrade linux-image-6.17.0-1010-realtimeUpgrade linux-image-6.8.0-1054-azure-fipsUpgrade linux-image-oem-22.04aUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1051-nvidia-64kUpgrade linux-image-virtualUpgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1059-azureUpgrade linux-image-6.17.0-1012-gcp-64kUpgrade linux-image-6.17.0-1012-awsUpgrade linux-image-generic-lpaeUpgrade linux-image-genericUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-fips-6.8Upgrade linux-image-aws-64k-6.8Upgrade linux-image-6.17.0-1011-oracle-64kUpgrade linux-image-raspi-6.17Upgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04dUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-azure-6.17Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-aws-6.17Upgrade linux-image-awsUpgrade linux-image-6.8.0-1054-gcp-fips | Apr 17, 2026 | Jan 14, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 10, 2026 | Jan 14, 2026 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub