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

What is CVE-2026-46184?

CVE-2026-46184 is a medium-severity denial of service vulnerability in Linux kernel, published on 28 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-369

Which versions are affected by CVE-2026-46184?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-46184?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-46184 being exploited?

There is no known exploitation of CVE-2026-46184 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-46184, DEBIAN-CVE-2026-46184, GHSA-42xg-w685-8874, ROOT-OS-DEBIAN-11-CVE-2026-46184, ROOT-OS-DEBIAN-12-CVE-2026-46184, ROOT-OS-UBUNTU-2204-CVE-2026-46184 and 2 more.