CVE-2021-47207
Ubuntu Linux Kernel Null Pointer Dereference ALSA Driver
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: gus: fix null pointer dereference on pointer block The pointer block return from snd_gf1_dma_next_block 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. 13, 2025, 8:42 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 a patched version.
- Reboot the system to apply 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-2021-47207.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47207 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-2021-47207
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-2021-47207 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47207 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. 13, 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) 4.4.293 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.291 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.256 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.218 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.5 Changed Reference Type https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 No Types Assigned https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 Patch Changed Reference Type https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 No Types Assigned https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 Patch Changed Reference Type https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f No Types Assigned https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f Patch Changed Reference Type https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f No Types Assigned https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f Patch Changed Reference Type https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be No Types Assigned https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be Patch Changed Reference Type https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be No Types Assigned https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be Patch Changed Reference Type https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c No Types Assigned https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c Patch Changed Reference Type https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c No Types Assigned https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c Patch Changed Reference Type https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa No Types Assigned https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa Patch Changed Reference Type https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa No Types Assigned https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa Patch Changed Reference Type https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 No Types Assigned https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 Patch Changed Reference Type https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 No Types Assigned https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 Patch Changed Reference Type https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc No Types Assigned https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc Patch Changed Reference Type https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc No Types Assigned https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc Patch Changed Reference Type https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc No Types Assigned https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc Patch Changed Reference Type https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc No Types Assigned https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc 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/16721797dcef2c7c030ffe73a07f39a65f9323c3 Added Reference https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f Added Reference https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be Added Reference https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c Added Reference https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa Added Reference https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 Added Reference https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc Added Reference https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc -
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: gus: fix null pointer dereference on pointer block The pointer block return from snd_gf1_dma_next_block 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/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa [No types assigned]