{"id":"CVE-2022-50494","state":"PUBLISHED","title":"thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash","description":"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<TASK>\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 ]","publishedAt":"2025-10-04T15:43:46.562Z","updatedAt":"2026-05-11T19:20:33.464Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"3e799e815097febbcb81b472285be824f5d089f9","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"0f91f66c568b316b19cb042cf50584467b3bdff4","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"6904727db0eb62fb0c2dce1cf331c341d97ee4b7","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"5a646c38f648185ee2c62f2a19da3c6f04e27612","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"513943bf879d45005213e6f5cfb7d9e9943f589f","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"5614908434451aafbf9b24cb5247cf1d21269f76","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"6e2a347b304224b2aeb1c0ea000d1cf8a02cc592","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"418fae0700e85a498062424f8656435c32cdb200","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"68b99e94a4a2db6ba9b31fe0485e057b9354a640","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thermal/intel/intel_powerclamp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"4.9.331","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.296","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.262","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.220","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.150","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.75","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.17","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thermal/intel/intel_powerclamp.c"]}],"references":["https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9","https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4","https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7","https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612","https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f","https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76","https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592","https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200","https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50494.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50494","state":"PUBLISHED","datePublished":"2025-10-04T15:43:46.562Z","dateUpdated":"2026-05-11T19:20:33.464Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-04T15:39:19.464Z"},"containers":{"cna":{"title":"thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash","descriptions":[{"lang":"en","value":"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<TASK>\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 ]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"3e799e815097febbcb81b472285be824f5d089f9","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"0f91f66c568b316b19cb042cf50584467b3bdff4","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"6904727db0eb62fb0c2dce1cf331c341d97ee4b7","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"5a646c38f648185ee2c62f2a19da3c6f04e27612","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"513943bf879d45005213e6f5cfb7d9e9943f589f","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"5614908434451aafbf9b24cb5247cf1d21269f76","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"6e2a347b304224b2aeb1c0ea000d1cf8a02cc592","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"418fae0700e85a498062424f8656435c32cdb200","versionType":"git"},{"version":"d6d71ee4a14ae602db343ec48c491851d7ec5267","status":"affected","lessThan":"68b99e94a4a2db6ba9b31fe0485e057b9354a640","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thermal/intel/intel_powerclamp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"4.9.331","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.296","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.262","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.220","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.150","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.75","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.17","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thermal/intel/intel_powerclamp.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9"},{"url":"https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4"},{"url":"https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7"},{"url":"https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612"},{"url":"https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f"},{"url":"https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76"},{"url":"https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592"},{"url":"https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200"},{"url":"https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:20:33.464Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"4.9.331"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"4.14.296"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"4.19.262"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.4.220"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.10.150"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.15.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.19.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.0.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine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