CVE-2026-46184

Description

In the Linux kernel, the following vulnerability has been resolved: sound: ua101: fix division by zero at probe Add a missing sanity check for bNrChannels in detect_usb_format() to prevent a division by zero in playback_urb_complete() and capture_urb_complete(). USB core does not validate class-specific descriptor fields such as bNrChannels, so drivers must verify them before use. If a device provides bNrChannels = 0, frame_bytes becomes zero and is later used as a divisor in the URB completion handlers, leading to a kernel crash.

References

• https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1
• https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983
• https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66
• https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87
• https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de