Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-mixer: us16x08: validate meter packet indices get_meter_levels_from_urb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meter_level[], comp_level[] and master_level[] in struct snd_us16x08_meter_store. Currently the function derives the channel index directly from the meter packet (MUB2(meter_urb, 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 meter_level[] and comp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[] updates with ARRAY_SIZE(master_level).

Severity Unknown

CVSS Score N/A

CVSS Vector N/A

CWE N/A

Public Exploit ✅ No

Source NVD

Published 2026-01-13

Updated 2026-06-02

Modified 2026-04-16

Fix URL N/A

Software	From version	Fixed in
kernel	6.13.0	6.18.3
unknown	—	—