PT-2026-44307 · Linux · Linux

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-46184

Mitre

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.

Related Identifiers

CVE-2026-46184

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-46184 · Security Note
• https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de · Note
• https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87 · Note
• https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66 · Note
• https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983 · Note
• https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1 · Note