Vulnerability CVE-2021-47403
Published: 2024-05-21

Description:
In the Linux kernel, the following vulnerability has been resolved:

ipack: ipoctal: fix module reference leak

A reference to the carrier module was taken on every open but was only
released once when the final reference to the tty struct was dropped.

Fix this by taking the module reference and initialising the tty driver
data when installing the tty.

 References:
https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a
https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6
https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b
https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69
https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666
https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c
https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562
https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27
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