# CVE-2025-71119: powerpc/kexec: Enable SMT before waking offline CPUs CVE-2025-71119 is fixed in 40 products on 1 platform, first by DEBIAN-CVE-2025-71119, released January 14, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-71119 - Priority: Routine - CVSS: 5.5 (Moderate) - EPSS: 0.0015 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jan 14, 2026 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71119 ## Description 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool6.12 amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-64kb sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-azure opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-azure sles 15.7 | 6.4.0-150700.20.27.1 | [SUSE-SU-2026:0472-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0472-1.md) | Feb 12, 2026 | | Linux | kernel-azure sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-default sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-default sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.26.1.160000.2.7 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.31.1.150700.17.21.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-default-base sles 16.0 | 6.12.0-160000.26.1.160000.2.7 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-docs sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-livepatch-6.12.64-87.122 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel-livepatch-SLE15-SP7-RT_Update_9 sles 15.7 | 1-150700.1.3.2 | [SUSE-SU-2026:0587-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0587-1.md) | Feb 20, 2026 | | Linux | kernel-livepatch-SLE15-SP7_Update_9 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-source sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-source sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-source-azure sles 15.7 | 6.4.0-150700.20.27.1 | [SUSE-SU-2026:0472-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0472-1.md) | Feb 12, 2026 | | Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-syms sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-syms-azure sles 15.7 | 6.4.0-150700.20.27.1 | [SUSE-SU-2026:0472-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0472-1.md) | Feb 12, 2026 | | Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 | | Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel6.12 amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-libbpf amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-libbpf-debuginfo amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-libbpf-devel amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-libbpf-static amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | linux Debian 12.15 (bookworm) | 6.1.162-1 | [DEBIAN-CVE-2025-71119](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71119.md) | Jan 14, 2026 | | Linux | linux Debian 13.5 (trixie) | 6.12.69-1 | [DEBIAN-CVE-2025-71119](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71119.md) | Jan 14, 2026 | | Linux | linux Debian 14 | 6.18.3-1 | [DEBIAN-CVE-2025-71119](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71119.md) | Jan 14, 2026 | | Linux | perf6.12 amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.64-87.122.amzn2023 | [ALAS2023-2026-1423](https://patchblox.com/security/data/fix/linux/alas2023-2026-1423.md) | Feb 5, 2026 | --- Data as of 2026-11-09T19:38:12Z UTC. 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