VulnerabilityPublished 28 May 2026Updated 6 Nov 2026

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

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in f1862dbf09080254c52175a448290c784dd7d3de : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in f1862dbf09080254c52175a448290c784dd7d3de, e02897c5b041c9b980055fa9a6167023d6dc5caf, d1f73f169c1014463b5060e3f60813e13ddc7b87 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 63978ab3e3e963db28093b53bb4598f2702e1ad7, < f1862dbf09080254c52175a448290c784dd7d3de	Fixed in f1862dbf09080254c52175a448290c784dd7d3de
LinuxLinux	Affected ≥ 63978ab3e3e963db28093b53bb4598f2702e1ad7, < e02897c5b041c9b980055fa9a6167023d6dc5caf	Fixed in e02897c5b041c9b980055fa9a6167023d6dc5caf
LinuxLinux	Affected ≥ 63978ab3e3e963db28093b53bb4598f2702e1ad7, < d1f73f169c1014463b5060e3f60813e13ddc7b87	Fixed in d1f73f169c1014463b5060e3f60813e13ddc7b87
LinuxLinux	Affected ≥ 63978ab3e3e963db28093b53bb4598f2702e1ad7, < aae1498c59f48d03ee358df84f07a5af9885f827	Fixed in aae1498c59f48d03ee358df84f07a5af9885f827
LinuxLinux	Affected ≥ 63978ab3e3e963db28093b53bb4598f2702e1ad7, < 6162e8212e88c39492d981b248b5e37002486c66	Fixed in 6162e8212e88c39492d981b248b5e37002486c66
LinuxLinux	Affected ≥ 63978ab3e3e963db28093b53bb4598f2702e1ad7, < 593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983	Fixed in 593dd7e6c890d8e4ca21b3e2f796b7cb8e8da983

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.

References

Community reviews

Loading reviews…