Vulnerability Details : CVE-2021-47211
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-47211
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47211
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 11 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47211
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2025-01-14 |
CWE ids for CVE-2021-47211
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-47211
-
https://git.kernel.org/stable/c/58fa50de595f152900594c28ec9915c169643739
ALSA: usb-audio: fix null pointer dereference on pointer cs_desc - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/b97053df0f04747c3c1e021ecbe99db675342954
ALSA: usb-audio: fix null pointer dereference on pointer cs_desc - kernel/git/stable/linux.git - Linux kernel stable treePatch
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