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CVE-2021-47332

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

EPSS 0.2%
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.
Affected products
Linux · Linux

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References
https://git.kernel.org/stable/c/7d7f30cf182e55023fa8fde4c084b2d37c6be69dhttps://git.kernel.org/stable/c/82e5ee742fdd8874fe996181b87fafe1eb5f1196https://git.kernel.org/stable/c/88262229b778f4f7a896da828d966f94dcb35d19https://git.kernel.org/stable/c/bee295f5e03510252d18b25cc1d26230256eb87ahttps://git.kernel.org/stable/c/cae0cf651adccee2c3f376e78f30fbd788d0829f