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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2026-46184 NameCVE-2026-46184 DescriptionIn 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…
CVE-2026-46184
| Name | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.257-1 | vulnerable | |
| bookworm | 6.1.170-3 | vulnerable | |
| bookworm (security) | 6.1.174-1 | vulnerable | |
| trixie | 6.12.86-1 | vulnerable | |
| trixie (security) | 6.12.90-2 | fixed | |
| forky, sid | 7.0.10-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | trixie | 6.12.88-1 | |||
| linux | source | (unstable) | 7.0.7-1 |
Notes
https://git.kernel.org/linus/d1f73f169c1014463b5060e3f60813e13ddc7b87 (7.1-rc2)
Apply commands
https://git.kernel.org/linus/d1f73f169c1014463b5060e3f60813e13ddc7b87 (7.1-rc2)OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Windows Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 6.12.88-1 |
| sid | Fixed | 7.0.7-1 |
| forky | Fixed | 7.0.7-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
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/d1f73f169c1014463b5060e3f60813e13ddc7b87
- https://git.kernel.org/stable/c/f1862dbf09080254c52175a448290c784dd7d3de
- https://security-tracker.debian.org/tracker/CVE-2026-46184
- https://www.suse.com/security/cve/CVE-2026-46184.html
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46184
- https://git.kernel.org/stable/c/66d9c2ed081f299cfb201d9e9c4faf920e56e0bf
- https://git.kernel.org/stable/c/aae1498c59f48d03ee358df84f07a5af9885f827
- https://git.kernel.org/stable/c/e02897c5b041c9b980055fa9a6167023d6dc5caf
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.