CVE-2026-46184

sound: ua101: fix division by zero at probe

State: Published
Severity: Not scored
Published: May 28, 2026
Updated: Jun 14, 2026
Reserved: May 13, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	63978ab3e3e963db28093b53bb4598f2702e1ad7 to before e02897c5b041c9b980055fa9a6167023d6dc5cafAffected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before aae1498c59f48d03ee358df84f07a5af9885f827Affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 66d9c2ed081f299cfb201d9e9c4faf920e56e0bfAffected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 6162e8212e88c39492d981b248b5e37002486c66Affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983Affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 0ff2b713f406e9ecadb406014d74e7a020ac12b1Affected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before f1862dbf09080254c52175a448290c784dd7d3deAffected 63978ab3e3e963db28093b53bb4598f2702e1ad7 to before d1f73f169c1014463b5060e3f60813e13ddc7b87Affected
LinuxLinux	2.6.34Affected before 2.6.34Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.88 through 6.12.Not affected 6.18.30 through 6.18.Not affected 7.0.7 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

63978ab3e3e963db28093b53bb4598f2702e1ad7 to before e02897c5b041c9b980055fa9a6167023d6dc5cafAffected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before aae1498c59f48d03ee358df84f07a5af9885f827Affected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 66d9c2ed081f299cfb201d9e9c4faf920e56e0bfAffected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 6162e8212e88c39492d981b248b5e37002486c66Affected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983Affected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before 0ff2b713f406e9ecadb406014d74e7a020ac12b1Affected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before f1862dbf09080254c52175a448290c784dd7d3deAffected
63978ab3e3e963db28093b53bb4598f2702e1ad7 to before d1f73f169c1014463b5060e3f60813e13ddc7b87Affected

LinuxLinux

2.6.34Affected
before 2.6.34Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.88 through 6.12.*Not affected
6.18.30 through 6.18.*Not affected
7.0.7 through 7.0.*Not affected
7.1 and laterNot affected

References

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