{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  cpufreq/amd-pstate: handle missing policy in dynamic EPP callbacks  cpufreq_cpu_get() returns NULL when no cpufreq policy is associated with the requested CPU, for example because the CPU is offline or the policy has already been torn down.  Both amd_pstate_power_supply_notifier() and amd_pstate_profile_set() acquire a policy via cpufreq_cpu_get() and then pass that pointer to amd_pstate_get_balanced_epp() and amd_pstate_set_epp(), which dereference it unconditionally.  A racing CPU hotplug or driver teardown can therefore lead to a NULL pointer dereference on either of these dynamic EPP paths.  The third cpufreq_cpu_get() caller in this file, amd_pstate_verify(), already handles the NULL case.  Bring the two new callers in line with that pattern: return NOTIFY_OK from the power-supply notifier (matching the other \"nothing to do\" exits) and -ENODEV from amd_pstate_profile_set() (the usual cpufreq error for a missing CPU policy).  Found by code inspection; not tested on hardware.",
  "id": "DEBIAN-CVE-2026-92492",
  "modified": "2026-09-18T04:47:36.658804575Z",
  "published": "2026-09-17T17:17:51.340Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-92492"
    }
  ],
  "upstream": [
    "CVE-2026-92492"
  ]
}