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.

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EPSS — Exploit Prediction

0.0013

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other 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

Frequently Asked Questions

What is 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 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.

How do I check if I'm vulnerable to CVE-2026-46184? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.