What’s Vulnerable › Vulnerabilities

CVE-2026-46184: sound: ua101: fix division by zero at probe

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-06-17
• Weakness: CWE-369

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.

Affected products

• Linux kernel: from 2.6.34 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.88, 6.18.30, 6.6.140

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.88. Check the vendor advisory for mitigations.

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/66d9c2ed081f299cfb201d9e9c4faf920e56e0bf
• https://git.kernel.org/stable/c/aae1498c59f48d03ee358df84f07a5af9885f827
• https://git.kernel.org/stable/c/d1f73f169c1014463b5060e3f60813e13ddc7b87
• https://git.kernel.org/stable/c/e02897c5b041c9b980055fa9a6167023d6dc5caf
• https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de

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