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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-47671
• https://git.kernel.org/stable/c/4f389e1276a5389c92cef860c9fde8e1c802a871
• https://git.kernel.org/stable/c/7eb0881aec26099089f12ae850aebd93190b1dfe
• https://git.kernel.org/stable/c/d9447f768bc8c60623e4bb3ce65b8f4654d33a50