ghsa-ccpq-qrrm-9f6q
Vulnerability from github
Published
2024-03-02 00:31
Modified
2024-03-02 00:31
Details

In the Linux kernel, the following vulnerability has been resolved:

platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios

init_dell_smbios_wmi() only registers the dell_smbios_wmi_driver on systems where the Dell WMI interface is supported. While exit_dell_smbios_wmi() unregisters it unconditionally, this leads to the following oops:

[ 175.722921] ------------[ cut here ]------------ [ 175.722925] Unexpected driver unregister! [ 175.722939] WARNING: CPU: 1 PID: 3630 at drivers/base/driver.c:194 driver_unregister+0x38/0x40 ... [ 175.723089] Call Trace: [ 175.723094] cleanup_module+0x5/0xedd [dell_smbios] ... [ 175.723148] ---[ end trace 064c34e1ad49509d ]---

Make the unregister happen on the same condition the register happens to fix this.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47073"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-01T22:15:47Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios\n\ninit_dell_smbios_wmi() only registers the dell_smbios_wmi_driver on systems\nwhere the Dell WMI interface is supported. While exit_dell_smbios_wmi()\nunregisters it unconditionally, this leads to the following oops:\n\n[  175.722921] ------------[ cut here ]------------\n[  175.722925] Unexpected driver unregister!\n[  175.722939] WARNING: CPU: 1 PID: 3630 at drivers/base/driver.c:194 driver_unregister+0x38/0x40\n...\n[  175.723089] Call Trace:\n[  175.723094]  cleanup_module+0x5/0xedd [dell_smbios]\n...\n[  175.723148] ---[ end trace 064c34e1ad49509d ]---\n\nMake the unregister happen on the same condition the register happens\nto fix this.",
  "id": "GHSA-ccpq-qrrm-9f6q",
  "modified": "2024-03-02T00:31:30Z",
  "published": "2024-03-02T00:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47073"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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