CVE-2026-46146

MEDIUM

ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()

Title source: cna

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3() The convert_chmap_v3() has a loop with its increment size of cs_desc->wLength, but we forgot to validate cs_desc->wLength itself, which may lead to potential endless loop by a malformed descriptor. Add a proper size check to abort the loop for plugging the hole.

References (8)

Core 8

Core References

https://git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9

https://git.kernel.org/stable/c/316aa0b1e3c5600eae5ab876394c1ac70e6db581

https://git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72a

https://git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8

https://git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3

https://git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd

https://git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d

https://git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d

Scores

CVSS v3 5.5

EPSS 0.0013

EPSS Percentile 2.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-835

Status published

Products (44)

linux/Kernel < 5.10.258linux

linux/Kernel 5.11.0 - 5.15.209linux

linux/Kernel 5.16.0 - 6.1.175linux

linux/Kernel 6.13.0 - 6.18.30linux

linux/Kernel 6.17.0 - 7.0.7linux

linux/Kernel 6.2.0 - 6.6.140linux

linux/Kernel 6.7.0 - 6.12.88linux

Linux/Linux < 6.17

Linux/Linux 1034719fdefd26caeec0a44a868bb5a412c2c1a5 - e0e3dcf48189603f3865f1a0b799b3b42baae96d

Linux/Linux 275e37532e8ebe25e8a4069b2d9f955bfd202a46

... and 34 more

Published May 28, 2026

Tracked Since May 28, 2026