CVE-2021-47207

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.

Affected Platforms

Weakness Type

CWE-476

References

• https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3
• https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f
• https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be
• https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c
• https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa
• https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315