What is CVE-2021-47073?

CVE-2021-47073 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.15 onward and patched in 4.19.192, 5.4.122, 5.10.40 and others. CVE-2021-47073 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47073?

CVE-2021-47073 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47073?

Yes, CVE-2021-47073 has been patched. Fixed versions include 4.19.192, 5.4.122, 5.10.40 and others. If you are running Linux kernel 4.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47073 actively exploited?

CVE-2021-47073 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47073

Medium

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.

Package Linux Kernel

Published 2024-03-01

Last modified 2025-01-09

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.15 and later are affected. Fixed in 4.19.192, 5.4.122, 5.10.40, 5.12.7, 5.13 and their respective stable series.

Affected from

≥ 4.15

Fixed in

✓ 4.19.192 4.19.x ✓ 5.4.122 5.4.x ✓ 5.10.40 5.10.x ✓ 5.12.7 5.12.x ✓ 5.13

References

5 total

Kernel Git
https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1

Patch
Kernel Git
https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e

Patch
Kernel Git
https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525

Patch
Kernel Git
https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7

Patch
Kernel Git
https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52

Patch

Details

CVE ID CVE-2021-47073

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-03-01

Modified 2025-01-09

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47073?

CVE-2021-47073 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.15 onward and has been patched in 4.19.192, 5.4.122, 5.10.40 and others. CVE-2021-47073 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47073?

CVE-2021-47073 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47073?

Yes. CVE-2021-47073 has been patched. Fixed versions include 4.19.192, 5.4.122, 5.10.40 and others. If you are running Linux kernel 4.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47073 actively exploited?

No. CVE-2021-47073 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.