{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-43332",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-43332"
  ],
  "published": "2026-05-08T13:31:29Z",
  "summary": "thermal: core: Fix thermal zone device registration error path",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: core: Fix thermal zone device registration error path\n\nIf thermal_zone_device_register_with_trips() fails after registering\na thermal zone device, it needs to wait for the tz->removal completion\nlike thermal_zone_device_unregister(), in case user space has managed\nto take a reference to the thermal zone device's kobject, in which case\nthermal_release() may not be called by the error path itself and tz may\nbe freed prematurely.\n\nAdd the missing wait_for_completion() call to the thermal zone device\nregistration error path.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43332"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9e796001af97a1f7368d5114b7a8533dd98d797a"
    },
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      "url": "https://git.kernel.org/stable/c/604da9c04c218362e1c1457304ebeb9c199d537c"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c4c7219e93319bba9ba0765dee597784c78f63c5"
    },
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      "url": "https://git.kernel.org/stable/c/4d390f0e507dfb16d58f83a58d78d1150dc8b9d7"
    },
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The vulnerable path is thermal zone registration/error handling exposed through local kernel device/sysfs activity, not through remote packets or an adjacent/physical protocol.\nAC:L - The race is between local userspace taking a sysfs/kobject reference and the registration error path dropping the device reference; a local attacker can influence the reference side and resource pressure, so under the overestimate rule this is low complexity.\nPR:L - No capability is needed to take references to readable thermal sysfs objects, and a basic local user can race that exposure; root-only debugfs testing paths also exist, but the higher-severity defensible metric is low privileges.\nUI:N - Exploitation does not require a separate victim to open a file or mount anything; the attacker can run local code to monitor/open the thermal sysfs object during registration failure.\nS:U - The corrupted object is in the kernel thermal core and impacts the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossing.\nC:H - The missing wait can free the thermal zone while a kobject reference keeps release deferred, producing a use-after-free on a kernel object; such memory corruption can be leveraged for kernel memory disclosure.\nI:H - The delayed release path dereferences and frees fields from the prematurely freed thermal zone, giving exploitable heap corruption/use-after-free conditions that can support arbitrary modification or code execution.\nA:H - Even without full exploitation, the use-after-free in the device release path can cause kernel oops/panic or heap corruption, resulting in high availability impact."
    }
  }
}