In the Linux kernel, the following vulnerability has been resolved:
sched/smt: Fix unbalance sched_smt_present dec/inc
I got the following warn report while doing stress test:
jump label: negative count! WARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0 Call Trace: <TASK> __static_key_slow_dec_cpuslocked+0x16/0x70 sched_cpu_deactivate+0x26e/0x2a0 cpuhp_invoke_callback+0x3ad/0x10d0 cpuhp_thread_fun+0x3f5/0x680 smpboot_thread_fn+0x56d/0x8d0 kthread+0x309/0x400 ret_from_fork+0x41/0x70 ret_from_fork_asm+0x1b/0x30 </TASK>
Because when cpuset_cpu_inactive() fails in sched_cpu_deactivate(), the cpu offline failed, but sched_smt_present is decremented before calling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so fix it by incrementing sched_smt_present in the error path.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade kernel-livepatch-5.15.165-110.161Upgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade perfUpgrade kernel-develUpgrade kernel-tools-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade kernel-livepatch-6.1.106-116.188Upgrade kernel-libbpf-develUpgrade kernel-libbpf-staticUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade python3-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-develUpgrade python3-perfUpgrade perfUpgrade bpftoolUpgrade kernel-tools-develUpgrade kernel-libbpfUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-modules-extraUpgrade kernel-tools-debuginfo | Oct 16, 2025 | Sep 4, 2024 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Sep 6, 2024 | Sep 4, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-tools | Jan 14, 2025 | Sep 4, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernelUpgrade python3-perfUpgrade kernel-tools-libs | Feb 11, 2025 | Sep 4, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perf | Dec 12, 2024 | Sep 4, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-libs | Jan 15, 2025 | Sep 4, 2024 |
| Oracle_linux | — | Upgrade kernel-uek | Nov 21, 2024 | Sep 4, 2024 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | May 15, 2025 | Sep 4, 2024 |
| Suse | — | Upgrade kernel-source-rtUpgrade kernel-rt-optionalUpgrade kernel-syms-rtUpgrade dtb-broadcomUpgrade kernel-64kb-optionalUpgrade dtb-appleUpgrade kernel-azure-extraUpgrade dlm-kmp-rtUpgrade kernel-defaultUpgrade kselftests-kmp-rtUpgrade kernel-kvmsmall-vdsoUpgrade dlm-kmp-azureUpgrade kernel-docsUpgrade dtb-apmUpgrade dtb-sprdUpgrade kernel-debug-develUpgrade kernel-default-baseUpgrade ocfs2-kmp-rtUpgrade reiserfs-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade kernel-symsUpgrade cluster-md-kmp-64kbUpgrade kernel-rt_debugUpgrade dtb-nvidiaUpgrade kernel-default-extraUpgrade kernel-obs-qaUpgrade kernel-docs-htmlUpgrade dtb-hisiliconUpgrade kernel-default-livepatch-develUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-64kb-extraUpgrade cluster-md-kmp-defaultUpgrade dtb-amdUpgrade reiserfs-kmp-64kbUpgrade dtb-marvellUpgrade kernel-rt-extraUpgrade dlm-kmp-defaultUpgrade dtb-amlogicUpgrade kernel-azure-vdsoUpgrade kernel-debugUpgrade reiserfs-kmp-rtUpgrade kernel-macrosUpgrade kernel-rt_debug-vdsoUpgrade dtb-socionextUpgrade kernel-default-manUpgrade dtb-armUpgrade kselftests-kmp-defaultUpgrade dtb-renesasUpgrade kernel-rt-vdsoUpgrade dtb-amazonUpgrade dtb-mediatekUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-64kbUpgrade kernel-zfcpdumpUpgrade kernel-source-vanillaUpgrade kernel-kvmsmall-develUpgrade kernel-kvmsmallUpgrade kernel-default-vdsoUpgrade kernel-azure-develUpgrade kernel-64kb-develUpgrade gfs2-kmp-64kbUpgrade dtb-exynosUpgrade gfs2-kmp-azureUpgrade kernel-azure-optionalUpgrade kernel-azureUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-azureUpgrade kernel-syms-azureUpgrade kernel-rt-livepatchUpgrade kernel-default-develUpgrade kernel-sourceUpgrade kernel-develUpgrade kernel-obs-buildUpgrade ocfs2-kmp-64kbUpgrade kernel-64kbUpgrade gfs2-kmp-rtUpgrade cluster-md-kmp-azureUpgrade kernel-devel-rtUpgrade kernel-rt-develUpgrade kernel-devel-azureUpgrade kernel-default-optionalUpgrade kernel-default-livepatchUpgrade kernel-default-base-rebuildUpgrade kernel-azure-livepatch-develUpgrade gfs2-kmp-defaultUpgrade dtb-rockchipUpgrade dtb-qcomUpgrade dlm-kmp-64kbUpgrade dtb-alteraUpgrade kernel-rt_debug-develUpgrade kernel-debug-vdsoUpgrade dtb-caviumUpgrade dtb-xilinxUpgrade dtb-lgUpgrade kernel-source-azureUpgrade cluster-md-kmp-rtUpgrade dtb-freescaleUpgrade dtb-allwinnerUpgrade ocfs2-kmp-azureUpgrade kernel-rt | Dec 5, 2025 | Jun 3, 2025 |
| Ubuntu | — | Upgrade linux-image-5.15.0-1065-ibmUpgrade linux-image-6.8.0-1019-gcpUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1075-azureUpgrade linux-image-gkeop-6.8Upgrade linux-image-5.15.0-125-generic-lpaeUpgrade linux-image-virtualUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcpUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-125-generic-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-oracleUpgrade linux-image-genericUpgrade linux-image-6.8.0-1017-oracleUpgrade linux-image-oem-22.04cUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1020-azureUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-5.15.0-1038-xilinx-zynqmpUpgrade linux-image-nvidiaUpgrade linux-image-5.15.0-125-lowlatencyUpgrade linux-image-oem-20.04bUpgrade linux-image-6.8.0-1002-gkeopUpgrade linux-image-5.15.0-1069-kvmUpgrade linux-image-azure-lts-22.04Upgrade linux-image-oem-22.04Upgrade linux-image-5.15.0-1065-raspiUpgrade linux-image-intelUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-1019-nvidiaUpgrade linux-image-6.8.0-50-generic-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-gkeopUpgrade linux-image-oem-24.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1067-intel-iotgUpgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-125-genericUpgrade linux-image-gkeop-5.15Upgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-1067-nvidia-lowlatencyUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-oem-24.04aUpgrade linux-image-5.15.0-125-lowlatency-64kUpgrade linux-image-oem-22.04bUpgrade linux-image-5.15.0-1067-nvidiaUpgrade linux-image-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gkeUpgrade linux-image-azure-fdeUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-raspiUpgrade linux-image-ibm-classicUpgrade linux-image-5.15.0-1070-oracleUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1017-ibmUpgrade linux-image-raspi-nolpaeUpgrade linux-image-6.8.0-50-lowlatency-64kUpgrade linux-image-azure-cvmUpgrade linux-image-6.8.0-1019-nvidia-lowlatencyUpgrade linux-image-5.15.0-1055-gkeopUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.8.0-1015-gkeUpgrade linux-image-azureUpgrade linux-image-6.8.0-1020-awsUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1016-raspiUpgrade linux-image-ibmUpgrade linux-image-oem-22.04aUpgrade linux-image-5.15.0-1072-awsUpgrade linux-image-6.8.0-1020-azure-fdeUpgrade linux-image-oem-22.04dUpgrade linux-image-5.15.0-1071-gcpUpgrade linux-image-nvidia-6.8Upgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1078-azureUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-gke-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1017-oracle-64kUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.8.0-1018-oemUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-50-genericUpgrade linux-image-awsUpgrade linux-image-6.8.0-50-lowlatencyUpgrade linux-image-5.15.0-1069-gkeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1019-nvidia-64kUpgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-6.8.0-1019-nvidia-lowlatency-64kUpgrade linux-image-ibm-lts-24.04 | Nov 12, 2024 | Sep 4, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 9, 2025 | Sep 4, 2024 |
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