Re: [PATCH] netlink: make sure nladdr has correct size in netlink_connect()

From: Eric Dumazet
Date: Fri Mar 23 2018 - 08:57:32 EST




On 03/23/2018 05:49 AM, Alexander Potapenko wrote:
> KMSAN reports use of uninitialized memory in the case when |alen| is
> smaller than sizeof(struct sockaddr_nl), and therefore |nladdr| isn't
> fully copied from the userspace.
>
> Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
> Fixes: 1da177e4c3f41524 ("Linux-2.6.12-rc2")

Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>

Thanks Alexander.