CVE-2021-47073
Vulnerability from cvelistv5
Published
2024-03-01 21:15
Modified
2024-12-19 07:34
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1a258e670434f404a4500b65ba1afea2c2b29bba
Version: 1a258e670434f404a4500b65ba1afea2c2b29bba
Version: 1a258e670434f404a4500b65ba1afea2c2b29bba
Version: 1a258e670434f404a4500b65ba1afea2c2b29bba
Version: 1a258e670434f404a4500b65ba1afea2c2b29bba
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   Linux Linux Version: 4.15
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    "vulnrichment": {
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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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T07:34:44.949Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47073\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T07:34:44.949Z\", \"dateReserved\": \"2024-02-29T22:33:44.297Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-01T21:15:11.466Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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