ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
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 · LinuxReferences
https://git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9https://git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72ahttps://git.kernel.org/stable/c/316aa0b1e3c5600eae5ab876394c1ac70e6db581https://git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483dhttps://git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cdhttps://git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8https://git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96dhttps://git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3