CVE-2021-47207

low-risk
Published 2024-04-10

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.

Do I need to act?

-
0.01% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (16)

Patch https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3
Patch https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f
Patch https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be
Patch https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c
Patch https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa
Patch https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315
Patch https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc
Patch https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc
Patch https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3
Patch https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f
Patch https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be
Patch https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c
Patch https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa
Patch https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315
Patch https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc
Patch https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal