Re: [PATCH] Fix null pointer dereference in vector_user_bpf

From: Greg KH
Date: Wed Jun 10 2020 - 01:53:48 EST


On Tue, Jun 09, 2020 at 11:43:00PM -0400, Gaurav Singh wrote:
> Signed-off-by: Gaurav Singh <gaurav1086@xxxxxxxxx>
>
> The bpf_prog is being checked for !NULL after uml_kmalloc but
> later its used directly for example:
> bpf_prog->filter = bpf and is also later returned upon success.
> Fix this, do a NULL check and return right away.
>
> ---
> arch/um/drivers/vector_user.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)

No signed-off-by?