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.
Affected products
linux: linux kernel
References9
- git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9 Patch
- git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72a Patch
- git.kernel.org/stable/c/316aa0b1e3c5600eae5ab876394c1ac70e6db581 Patch
- git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d Patch
- git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd Patch
- git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8 Patch
- git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d Patch
- git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3 Patch
- cert-portal.siemens.com/productcert/html/ssa-784472.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 15 November 2026
- CWE
- CWE-835
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.