In the Linux kernel, the following vulnerability has been resolved:
cpufreq: Init completion before kobject_init_and_add()
In cpufreq_policy_alloc(), it will call uninitialed completion in cpufreq_sysfs_release() when kobject_init_and_add() fails. And that will cause a crash such as the following page fault in complete:
BUG: unable to handle page fault for address: fffffffffffffff8 [..] RIP: 0010:complete+0x98/0x1f0 [..] Call Trace: kobject_put+0x1be/0x4c0 cpufreq_online.cold+0xee/0x1fd cpufreq_add_dev+0x183/0x1e0 subsys_interface_register+0x3f5/0x4e0 cpufreq_register_driver+0x3b7/0x670 acpi_cpufreq_init+0x56c/0x1000 [acpi_cpufreq] do_one_initcall+0x13d/0x780 do_init_module+0x1c3/0x630 load_module+0x6e67/0x73b0 __do_sys_finit_module+0x181/0x240 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade kernel-livepatch-5.15.90-54.138Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.10.165-143.735Upgrade python-perfUpgrade perfUpgrade kernel-headersUpgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Oct 6, 2025 | Oct 6, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade bpftool | Dec 12, 2025 | Dec 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Oct 4, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.15Upgrade linux-azure-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.4Upgrade linux-azureUpgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-aws-fipsUpgrade linux-iotUpgrade linux-azure-fdeUpgrade linux-nvidiaUpgrade linux-oracleUpgrade linux-gkeopUpgrade linux-realtimeUpgrade linux-kvmUpgrade linux-azure-5.15Upgrade linux-azure-fipsUpgrade linux-ibmUpgrade linux-hwe-5.15Upgrade linux-gcpUpgrade linux-oracle-5.15Upgrade linux-awsUpgrade linux-raspi-5.4Upgrade linux-fipsUpgrade linuxUpgrade linux-riscv-5.15Upgrade linux-intel-iotgUpgrade linux-bluefieldUpgrade linux-nvidia-tegra-5.15Upgrade linux-raspiUpgrade linux-oracle-5.4Upgrade linux-aws-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.4Upgrade linux-gkeUpgrade linux-lowlatencyUpgrade linux-ibm-5.4Upgrade linux-intel-iot-realtime | Oct 10, 2025 | Oct 4, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 4, 2025 |
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