CVE-2021-47073
"Dell SMBIOS WMI Driver Reference Leak Vulnerability"
Description
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.
INFO
Published Date :
March 1, 2024, 10:15 p.m.
Last Modified :
Jan. 9, 2025, 3:24 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel packages.
- Reboot the system to apply the updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47073.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47073 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47073
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47073 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47073 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 09, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.192 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.122 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.40 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.7 *cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 No Types Assigned https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 Patch Changed Reference Type https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 No Types Assigned https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 Patch Changed Reference Type https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e No Types Assigned https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e Patch Changed Reference Type https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e No Types Assigned https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e Patch Changed Reference Type https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 No Types Assigned https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 Patch Changed Reference Type https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 No Types Assigned https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 Patch Changed Reference Type https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 No Types Assigned https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 Patch Changed Reference Type https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 No Types Assigned https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 Patch Changed Reference Type https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 No Types Assigned https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 Patch Changed Reference Type https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 No Types Assigned https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 Added Reference https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e Added Reference https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 Added Reference https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 Added Reference https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 01, 2024
Action Type Old Value New Value Added Description 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. Added Reference Linux https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e [No types assigned]