In the Linux kernel, the following vulnerability has been resolved:
trace/fgraph: Fix the warning caused by missing unregister notifier
This warning was triggered during testing on v6.16:
notifier callback ftrace_suspend_notifier_call already registered WARNING: CPU: 2 PID: 86 at kernel/notifier.c:23 notifier_chain_register+0x44/0xb0 ... Call Trace: <TASK> blocking_notifier_chain_register+0x34/0x60 register_ftrace_graph+0x330/0x410 ftrace_profile_write+0x1e9/0x340 vfs_write+0xf8/0x420 ? filp_flush+0x8a/0xa0 ? filp_close+0x1f/0x30 ? do_dup2+0xaf/0x160 ksys_write+0x65/0xe0 do_syscall_64+0xa4/0x260 entry_SYSCALL_64_after_hwframe+0x77/0x7f
When writing to the function_profile_enabled interface, the notifier was not unregistered after start_graph_tracing failed, causing a warning the next time function_profile_enabled was written.
Fixed by adding unregister_pm_notifier in the exception path.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-livepatch-6.12.46-66.121Upgrade kernel6.12-libbpfUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-toolsUpgrade kernel6.12-modules-extraUpgrade perf6.12-debuginfoUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-libbpf-staticUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12Upgrade kernel6.12-modules-extra-commonUpgrade bpftool6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade perf6.12Upgrade kernel6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-tools-develUpgrade kernel6.12-develUpgrade kernel6.12-headersUpgrade python3-perf6.12 | Sep 30, 2025 | Sep 16, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftool | Dec 12, 2025 | Dec 11, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel-tools-libs | Jan 15, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelists | Dec 12, 2025 | Dec 11, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Nov 11, 2025 | Sep 16, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 16, 2025 |
| Ubuntu | — | Upgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-aws-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1050-raspiUpgrade linux-image-6.8.0-106-fipsUpgrade linux-image-gke-64kUpgrade linux-image-6.8.0-1050-awsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-106-lowlatency-64kUpgrade linux-image-ibm-classicUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-6.8.0-106-genericUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-xilinxUpgrade linux-image-6.8.1-1045-realtimeUpgrade linux-image-generic-64k-6.8Upgrade linux-image-raspiUpgrade linux-image-fips-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1048-gkeUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1048-gke-64kUpgrade linux-image-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-kvmUpgrade linux-image-6.8.0-2040-raspi-realtimeUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1049-ibmUpgrade linux-image-6.8.0-1047-oracle-64kUpgrade linux-image-gcp-fipsUpgrade linux-image-gkeop-6.8Upgrade linux-image-aws-64k-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-oem-22.04aUpgrade linux-image-azureUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1052-gcp-fipsUpgrade linux-image-awsUpgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.8.0-1050-aws-fipsUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1029-xilinxUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-raspi-6.8Upgrade linux-image-6.8.0-1049-nvidia-lowlatency-64kUpgrade linux-image-virtualUpgrade linux-image-gke-64k-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-generic-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1035-gkeopUpgrade linux-image-oracle-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-gke-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1052-azure-fipsUpgrade linux-image-6.8.0-1049-nvidia-lowlatencyUpgrade linux-image-6.8.0-1049-nvidiaUpgrade linux-image-6.8.0-1047-oracleUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-oracleUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1052-gcp-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-fipsUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-gkeUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1050-aws-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-xilinx-6.8Upgrade linux-image-genericUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1052-gcpUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-106-lowlatencyUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-1049-nvidia-64kUpgrade linux-image-6.8.0-106-generic-64kUpgrade linux-image-aws-64kUpgrade linux-image-intel-iotgUpgrade linux-image-gkeop | Mar 17, 2026 | Sep 16, 2025 |
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