CVE-2021-47671 Information

Description

In the Linux kernel the following vulnerability has been resolved:

can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path

In es58x_rx_err_msg() if can->do_set_mode() fails the function directly returns without calling netif_rx(skb). This means that the skb previously allocated by alloc_can_err_skb() is not freed. In other terms this is a memory leak.

This patch simply removes the return statement in the error branch and let the function continue.

Issue was found with GCC -fanalyzer please follow the link below for details.

Reference

https://git.kernel.org/stable/c/4f389e1276a5389c92cef860c9fde8e1c802a871 https://git.kernel.org/stable/c/7eb0881aec26099089f12ae850aebd93190b1dfe https://git.kernel.org/stable/c/d9447f768bc8c60623e4bb3ce65b8f4654d33a50