CVE-2021-47211
"ALSA USB Audio Null Pointer Dereference"
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: fix null pointer dereference on pointer cs_desc The pointer cs_desc return from snd_usb_find_clock_source could be null, so there is a potential null pointer dereference issue. Fix this by adding a null check before dereference.
INFO
Published Date :
April 10, 2024, 7:15 p.m.
Last Modified :
Jan. 14, 2025, 2:43 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 package.
- 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-2021-47211.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47211 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-2021-47211
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-2021-47211 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47211 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. 14, 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 CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.5 Changed Reference Type https://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739 No Types Assigned https://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739 Patch Changed Reference Type https://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739 No Types Assigned https://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739 Patch Changed Reference Type https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954 No Types Assigned https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954 Patch Changed Reference Type https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954 No Types Assigned https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954 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/58fa50de595f152900594c28ec9915c169643739 Added Reference https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954 -
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
Apr. 10, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: fix null pointer dereference on pointer cs_desc The pointer cs_desc return from snd_usb_find_clock_source could be null, so there is a potential null pointer dereference issue. Fix this by adding a null check before dereference. Added Reference kernel.org https://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954 [No types assigned]