CVE-2026-46184
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…
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-369
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0ff2b713f406e9ecadb406014d74e7a020ac12b1Patch
- https://git.kernel.org/stable/c/593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983Patch
- https://git.kernel.org/stable/c/6162e8212e88c39492d981b248b5e37002486c66Patch
- https://git.kernel.org/stable/c/66d9c2ed081f299cfb201d9e9c4faf920e56e0bfPatch
- https://git.kernel.org/stable/c/aae1498c59f48d03ee358df84f07a5af9885f827Patch
- https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87Patch
- https://git.kernel.org/stable/c/e02897c5b041c9b980055fa9a6167023d6dc5cafPatch
- https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3dePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.