CVE-2021-47332 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ALSA: usx2y: Don’t call free_pages_exact() with NULL address

Unlike some other functions we can’t pass NULL pointer to free_pages_exact(). Add a proper NULL check for avoiding possible Oops.

Reference

https://git.kernel.org/stable/c/88262229b778f4f7a896da828d966f94dcb35d19 https://git.kernel.org/stable/c/7d7f30cf182e55023fa8fde4c084b2d37c6be69d https://git.kernel.org/stable/c/bee295f5e03510252d18b25cc1d26230256eb87a https://git.kernel.org/stable/c/82e5ee742fdd8874fe996181b87fafe1eb5f1196 https://git.kernel.org/stable/c/cae0cf651adccee2c3f376e78f30fbd788d0829f