CVE-2022-50494

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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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/thermal/intel/intel_powerclamp.c"], "versions": [{"version": "d6d71ee4a14ae602db343ec48c491851d7ec5267", "lessThan": "3e799e815097febbcb81b472285be824f5d089f9", "status": "affected", "versionType": "git"}, {"version": "d6d71ee4a14ae602db343ec48c491851d7ec5267", "lessThan": "0f91f66c568b316b19cb042cf50584467b3bdff4", "status": "affected", "versionType": "git"}, {"version": "d6d71ee4a14ae602db343ec48c491851d7ec5267", "lessThan": "6904727db0eb62fb0c2dce1cf331c341d97ee4b7", "status": "affected", "versionType": "git"}, {"version": "d6d71ee4a14ae602db343ec48c491851d7ec5267", "lessThan": "5a646c38f648185ee2c62f2a19da3c6f04e27612", 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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 ]"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.331", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.296", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.262", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.220", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.150", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.75", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.19.17", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.0.3", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1", "versionStartIncluding": "3.9"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:20:33.464Z"}}}, "cveMetadata": {"cveId": "CVE-2022-50494", "state": "PUBLISHED", "dateUpdated": "2026-11-05T20:20:49.066Z", "dateReserved": "2025-10-04T15:39:19.464Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-10-04T15:43:46.562Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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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 ]"}], "id": "CVE-2022-50494", "lastModified": "2026-11-05T21:17:02.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-50494", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:12:17.132374Z", "version": "2.0.3"}}]}, "published": "2025-10-04T16:15:46.420", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash", "id": "2401563", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401563"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nthermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash\nWhen CPU 0 is offline and intel_powerclamp is used to inject\nidle, it generates kernel BUG:\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...\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.\nUse get_cpu() instead of smp_processor_id() to avoid this BUG.\n[ rjw: Subject edits ]"], "name": "CVE-2022-50494", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50494\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50494\nhttps://lore.kernel.org/linux-cve-announce/2025100418-CVE-2022-50494-00a0@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-06T14:41:17.089100+00:00", "updated": "2025-10-06T14:41:17.089155+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}