In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-mixer: us16x08: validate meter packet indices getmeterlevelsfromurb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meterlevel[], complevel[] and masterlevel[] in struct sndus16x08meterstore. Currently the function derives the channel index directly from the meter packet (MUB2(meterurb, s) - 1) and uses it to index those arrays without validating the range. If the packet contains a negative or out-of-range channel number, the driver may write past the end of these arrays. Introduce a local channel variable and validate it before updating the arrays. We reject negative indices, limit meterlevel[] and complevel[] to SNDUS16X08MAXCHANNELS, and guard masterlevel[] updates with ARRAYSIZE(master_level).