Re: [PATCH] [stable pre-4.8] can: bcm: check timer values before ktime conversion

On Thu, Jan 24, 2019 at 10:08:42AM +0100, Oliver Hartkopp wrote:

Kyungtae Kim detected a potential integer overflow in bcm_[rx|tx]_setup() when the conversion into ktime multiplies the given value with NSEC_PER_USEC (1000).

Reference: https://marc.info/?l=linux-can&m=154732118819828&w=2

Add a check for the given tv_usec, so that the value stays below one second. Additionally limit the tv_sec value to a reasonable value for CAN related use-cases of 400 days and ensure all values to be positive.

This patch is the pre-4.8 version of upstream commit 93171ba6f1deffd8

I can't find this commit id upstream, there's nothing with the same subject name, nor does this code exist upstream. What's going on?

-- Thanks, Sasha