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CVE-2026-93142 (GCVE-0-2026-93142)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11
VLAI
Title
thermal/drivers/rcar: Fix error checking in probe()
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.
Severity
No CVSS data available.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bbcf90c0646ac797700269fa6645a6a46466c79f , < a85bcd0c7ef66e3404b3c99e5589c5ea622a757e (git)
Affected: bbcf90c0646ac797700269fa6645a6a46466c79f , < 810875c5996f731961fc5ee1bd24e711f2e8fe78 (git)
Affected: bbcf90c0646ac797700269fa6645a6a46466c79f , < 623349a18d4c6e6add7876553c0cb6947c8d92e6 (git)
Affected: bbcf90c0646ac797700269fa6645a6a46466c79f , < 35bf61798e7d4abf39667d98f298f793b3dd9bbe (git)
Affected: bbcf90c0646ac797700269fa6645a6a46466c79f , < d67607e7749527850619a10d3ed033b02dcea516 (git)
Affected: bbcf90c0646ac797700269fa6645a6a46466c79f , < dd04ad1cdabcad51e34b74b4e91b9aeb7180d05d (git)
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Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

{
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      "affected": [
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          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/thermal/renesas/rcar_thermal.c"
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      "cpeApplicability": [
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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": "2026-09-17T16:11:41.430Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/a85bcd0c7ef66e3404b3c99e5589c5ea622a757e"
        },
        {
          "url": "https://git.kernel.org/stable/c/810875c5996f731961fc5ee1bd24e711f2e8fe78"
        },
        {
          "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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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93142",
    "datePublished": "2026-09-17T16:11:41.430Z",
    "dateReserved": "2026-09-17T16:02:15.088Z",
    "dateUpdated": "2026-09-17T16:11:41.430Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-18T00:11:39Z",
      "cve": "CVE-2026-93142",
      "id": "CVE-2026-93142",
      "initial_release_date": "2026-09-18T00:11:39Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93142",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93142.json",
      "version": "2"
    }
  }
}



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