CVE-2021-47159
Linux kernel net dsa Off-Bounds Write Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes. Fix this by checking for error codes and changing the type of "i" to just int.
INFO
Published Date :
March 25, 2024, 10:15 a.m.
Last Modified :
March 13, 2025, 9:24 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 affected Linux kernel packages.
- Reboot the system after the 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-2021-47159.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47159 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-2021-47159
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-2021-47159 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47159 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-835 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) 5.5 from (excluding) 5.10.42 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 from (excluding) 5.4.124 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.7 from (excluding) 4.19.193 Added Reference Type CVE: https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8 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/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37 Added Reference https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373 Added Reference https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83 Added Reference https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6 Added Reference https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8 -
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: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes. Fix this by checking for error codes and changing the type of "i" to just int. Added Reference kernel.org https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83 [No types assigned]