{"id":"CVE-2022-50494","summary":"thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash\n\nWhen CPU 0 is offline and intel_powerclamp is used to inject\nidle, it generates kernel BUG:\n\nBUG: using smp_processor_id() in preemptible [00000000] code: bash/15687\ncaller is debug_smp_processor_id+0x17/0x20\nCPU: 4 PID: 15687 Comm: bash Not tainted 5.19.0-rc7+ #57\nCall Trace:\n\u003cTASK\u003e\ndump_stack_lvl+0x49/0x63\ndump_stack+0x10/0x16\ncheck_preemption_disabled+0xdd/0xe0\ndebug_smp_processor_id+0x17/0x20\npowerclamp_set_cur_state+0x7f/0xf9 [intel_powerclamp]\n...\n...\n\nHere CPU 0 is the control CPU by default and changed to the current CPU,\nif CPU 0 offlined. This check has to be performed under cpus_read_lock(),\nhence the above warning.\n\nUse get_cpu() instead of smp_processor_id() to avoid this BUG.\n\n[ rjw: Subject edits ]","modified":"2026-04-02T08:28:33.003630Z","published":"2025-10-04T15:43:46.562Z","related":["SUSE-SU-2025:4111-1","SUSE-SU-2025:4135-1","SUSE-SU-2025:4139-1","SUSE-SU-2025:4149-1","SUSE-SU-2025:4188-1","SUSE-SU-2025:4320-1","SUSE-SU-2025:4515-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50494.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200"},{"type":"WEB","url":"https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612"},{"type":"WEB","url":"https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50494.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50494"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d6d71ee4a14ae602db343ec48c491851d7ec5267"},{"fixed":"3e799e815097febbcb81b472285be824f5d089f9"},{"fixed":"0f91f66c568b316b19cb042cf50584467b3bdff4"},{"fixed":"6904727db0eb62fb0c2dce1cf331c341d97ee4b7"},{"fixed":"5a646c38f648185ee2c62f2a19da3c6f04e27612"},{"fixed":"513943bf879d45005213e6f5cfb7d9e9943f589f"},{"fixed":"5614908434451aafbf9b24cb5247cf1d21269f76"},{"fixed":"6e2a347b304224b2aeb1c0ea000d1cf8a02cc592"},{"fixed":"418fae0700e85a498062424f8656435c32cdb200"},{"fixed":"68b99e94a4a2db6ba9b31fe0485e057b9354a640"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50494.json"}}],"schema_version":"1.7.5"}