CVE-2021-47138
cxgb4: avoid accessing registers when clearing filters
Description
In the Linux kernel, the following vulnerability has been resolved: cxgb4: avoid accessing registers when clearing filters Hardware register having the server TID base can contain invalid values when adapter is in bad state (for example, due to AER fatal error). Reading these invalid values in the register can lead to out-of-bound memory access. So, fix by using the saved server TID base when clearing filters.
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 | HIGH | [email protected] |
Solution
- Update the Linux kernel to a non-vulnerable version.
- Apply any available security 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-2021-47138.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47138 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-2021-47138
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-2021-47138 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47138 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:H/I:N/A:H Added CWE CWE-787 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) 5.2 from (excluding) 5.4.124 Added Reference Type CVE: https://git.kernel.org/stable/c/02f03883fdb10ad7e66717c70ea163a8d27ae6e7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/02f03883fdb10ad7e66717c70ea163a8d27ae6e7 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/285207a558ab456aa7d8aa877ecc7e91fcc51710 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/285207a558ab456aa7d8aa877ecc7e91fcc51710 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/88c380df84fbd03f9b137c2b9d0a44b9f2f553b0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/88c380df84fbd03f9b137c2b9d0a44b9f2f553b0 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/02f03883fdb10ad7e66717c70ea163a8d27ae6e7 Added Reference https://git.kernel.org/stable/c/0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf Added Reference https://git.kernel.org/stable/c/285207a558ab456aa7d8aa877ecc7e91fcc51710 Added Reference https://git.kernel.org/stable/c/88c380df84fbd03f9b137c2b9d0a44b9f2f553b0 -
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: cxgb4: avoid accessing registers when clearing filters Hardware register having the server TID base can contain invalid values when adapter is in bad state (for example, due to AER fatal error). Reading these invalid values in the register can lead to out-of-bound memory access. So, fix by using the saved server TID base when clearing filters. Added Reference kernel.org https://git.kernel.org/stable/c/0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/02f03883fdb10ad7e66717c70ea163a8d27ae6e7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/285207a558ab456aa7d8aa877ecc7e91fcc51710 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/88c380df84fbd03f9b137c2b9d0a44b9f2f553b0 [No types assigned]