CVE-2026-93142 (GCVE-0-2026-93142)
Vulnerability from cvelistv5
Published
2026-09-17 16:11
Modified
2026-10-19 09:06
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: thermal/drivers/rcar: Fix error checking in probe() This code accidentally calls thermal_zone_device_enable() before checking whether thermal_zone_device_register_with_trips() failed. Move the call until later to avoid an error pointer dereference of "priv->zone". The driver works differently depending on if we are using OF thermal or not. We use thermal_add_hwmon_sysfs() if we are using OF thermal and call thermal_zone_device_enable() if not. We can share same error check for if either of these fail. Moving the thermal_zone_device_enable() call is a bit cleaner as well. The original code used a three step process to cleanup: 1. Call thermal_zone_device_unregister() to cleanup. 2. Set priv->zone to an error pointer to preserve the error code. 3. Set priv->zone to NULL to avoid a second call to thermal_zone_device_unregister() in the rcar_thermal_remove() function. Now we can just do a direct goto error_unregister and rcar_thermal_remove() handles the cleanup properly.
References
Impacted products
Vendor Product Version
Linux Linux Version: bbcf90c0646ac797700269fa6645a6a46466c79f
Version: bbcf90c0646ac797700269fa6645a6a46466c79f
Version: bbcf90c0646ac797700269fa6645a6a46466c79f
Version: bbcf90c0646ac797700269fa6645a6a46466c79f
Version: bbcf90c0646ac797700269fa6645a6a46466c79f
Version: bbcf90c0646ac797700269fa6645a6a46466c79f
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{
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          "programFiles": [
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      "cpeApplicability": [
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          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/drivers/rcar: Fix error checking in probe()\n\nThis code accidentally calls thermal_zone_device_enable() before checking\nwhether thermal_zone_device_register_with_trips() failed.  Move the call\nuntil later to avoid an error pointer dereference of \"priv-\u003ezone\".\n\nThe driver works differently depending on if we are using OF thermal or\nnot.  We use thermal_add_hwmon_sysfs() if we are using OF thermal and\ncall thermal_zone_device_enable() if not.  We can share same error check\nfor if either of these fail.\n\nMoving the thermal_zone_device_enable() call is a bit cleaner as well.\nThe original code used a three step process to cleanup:\n1. Call thermal_zone_device_unregister() to cleanup.\n2. Set priv-\u003ezone to an error pointer to preserve the error code.\n3. Set priv-\u003ezone to NULL to avoid a second call to\n   thermal_zone_device_unregister() in the rcar_thermal_remove()\n   function.\n\nNow we can just do a direct goto error_unregister and rcar_thermal_remove()\nhandles the cleanup properly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:06:14.866Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/a85bcd0c7ef66e3404b3c99e5589c5ea622a757e"
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        {
          "url": "https://git.kernel.org/stable/c/810875c5996f731961fc5ee1bd24e711f2e8fe78"
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          "url": "https://git.kernel.org/stable/c/623349a18d4c6e6add7876553c0cb6947c8d92e6"
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          "url": "https://git.kernel.org/stable/c/35bf61798e7d4abf39667d98f298f793b3dd9bbe"
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          "url": "https://git.kernel.org/stable/c/d67607e7749527850619a10d3ed033b02dcea516"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd04ad1cdabcad51e34b74b4e91b9aeb7180d05d"
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      "title": "thermal/drivers/rcar: Fix error checking in probe()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93142",
    "datePublished": "2026-09-17T16:11:41.430Z",
    "dateReserved": "2026-09-17T16:02:15.088Z",
    "dateUpdated": "2026-10-19T09:06:14.866Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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