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CVE-2021-47073

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

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 1a258e670434f404a4500b65ba1afea2c2b29bba before 75cfc833da4a2111106d4c134e93e0c7f41e35e7; affected 1a258e670434f404a4500b65ba1afea2c2b29bba before 6fa78a6b9a3beb676a010dc489c1257f7e432525; affected 1a258e670434f404a4500b65ba1afea2c2b29bba before 0cf036a0d325200e6c27b90908e51195bbc557b1; affected 1a258e670434f404a4500b65ba1afea2c2b29bba before 8d746ea7c687bab060a2c05a35c449302406cd52; affected 1a258e670434f404a4500b65ba1afea2c2b29bba before 3a53587423d25c87af4b4126a806a0575104b45e
Linux / Linuxaffected 4.15; unaffected 0 before 4.15; unaffected 4.19.192 through 4.19.*; unaffected 5.4.122 through 5.4.*; unaffected 5.10.40 through 5.10.*; unaffected 5.12.7 through 5.12.*; unaffected 5.13 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.