{"cve":"CVE-2026-92492","nvd":{"published":"2026-09-17T17:17:51.340","modified":"2026-10-19T09:19:39.477","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq/amd-pstate: handle missing policy in dynamic EPP callbacks\n\ncpufreq_cpu_get() returns NULL when no cpufreq policy is associated with\nthe requested CPU, for example because the CPU is offline or the policy\nhas already been torn down.  Both amd_pstate_power_supply_notifier() and\namd_pstate_profile_set() acquire a policy via cpufreq_cpu_get() and then\npass that pointer to amd_pstate_get_balanced_epp() and\namd_pstate_set_epp(), which dereference it unconditionally.  A racing\nCPU hotplug or driver teardown can therefore lead to a NULL pointer\ndereference on either of these dynamic EPP paths.\n\nThe third cpufreq_cpu_get() caller in this file, amd_pstate_verify(),\nalready handles the NULL case.  Bring the two new callers in line with\nthat pattern: return NOTIFY_OK from the power-supply notifier (matching\nthe other \"nothing to do\" exits) and -ENODEV from amd_pstate_profile_set()\n(the usual cpufreq error for a missing CPU policy).\n\nFound by code inspection; not tested on hardware.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/39c0cf62fc7851a17782e7efe8dfb2948739c681","https://git.kernel.org/stable/c/70c8c8b50d80f681f50ddcc66a9400dd87508913","https://git.kernel.org/stable/c/f4ade8d224756ab69f108204dde6777bac4664e4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-92492","score":0.00206,"percentile":0.10632,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}