CVE-2021-47143
net/smc: remove device from smcd_dev_list after failed device_add()
Description
In the Linux kernel, the following vulnerability has been resolved: net/smc: remove device from smcd_dev_list after failed device_add() If the device_add() for a smcd_dev fails, there's no cleanup step that rolls back the earlier list_add(). The device subsequently gets freed, and we end up with a corrupted list. Add some error handling that removes the device from the list.
INFO
Published Date :
March 25, 2024, 9:15 a.m.
Last Modified :
March 13, 2025, 9:09 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 to resolve this vulnerability.
- Reboot the system after the kernel update.
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-2021-47143.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47143 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-2021-47143
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-2021-47143 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47143 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]
Mar. 13, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-459 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.12.9 *cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19 from (excluding) 5.10.42 Added Reference Type CVE: https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897 Types: 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/40588782f1016c655ae1d302892f61d35af96842 Added Reference https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607 Added Reference https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897 -
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. 25, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net/smc: remove device from smcd_dev_list after failed device_add() If the device_add() for a smcd_dev fails, there's no cleanup step that rolls back the earlier list_add(). The device subsequently gets freed, and we end up with a corrupted list. Add some error handling that removes the device from the list. Added Reference kernel.org https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607 [No types assigned]