Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v4.19.228

Description The issue is related to an underflow in the speaker gain control put() function. This problem was introduced in version v4.17 and is fixed in Linux Kernel version v4.19.228. The actual impact and attack plausibility have not yet been proven.

Recommendations For versions prior to v4.19.228, update to Linux Kernel version v4.19.228 or later to resolve the issue. As a temporary workaround, consider restricting access to the speaker gain control put() function until a patch is available.