CVE-2021-47073

published 2024-03-01

CVE-2021-47073: 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…

Priority P4 19 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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

16 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 5.10.40-1 (bookworm)	linux 5.10.40-1 (bookworm)
linux	linux	—	—
linux	linux	>= 1a258e670434f404a4500b65ba1afea2c2b29bba < 75cfc833da4a2111106d4c134e93e0c7f41e35e7	75cfc833da4a2111106d4c134e93e0c7f41e35e7
linux	linux	>= 1a258e670434f404a4500b65ba1afea2c2b29bba < 6fa78a6b9a3beb676a010dc489c1257f7e432525	6fa78a6b9a3beb676a010dc489c1257f7e432525
linux	linux	>= 1a258e670434f404a4500b65ba1afea2c2b29bba < 0cf036a0d325200e6c27b90908e51195bbc557b1	0cf036a0d325200e6c27b90908e51195bbc557b1
linux	linux	>= 1a258e670434f404a4500b65ba1afea2c2b29bba < 8d746ea7c687bab060a2c05a35c449302406cd52	8d746ea7c687bab060a2c05a35c449302406cd52
linux	linux	>= 1a258e670434f404a4500b65ba1afea2c2b29bba < 3a53587423d25c87af4b4126a806a0575104b45e	3a53587423d25c87af4b4126a806a0575104b45e
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.40-1	5.10.40-1
linux	linux_kernel	>= 0 < 5.10.40-1	5.10.40-1
linux	linux_kernel	>= 0 < 5.10.40-1	5.10.40-1
linux	linux_kernel	>= 0 < 5.10.40-1	5.10.40-1
linux	linux_kernel	>= 4.15 < 4.19.192	4.19.192
linux	linux_kernel	>= 4.20 < 5.4.122	5.4.122
linux	linux_kernel	>= 5.11 < 5.12.7	5.12.7
linux	linux_kernel	>= 5.5 < 5.10.40	5.10.40

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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CWE-99