Messages in this thread | | | Subject | Re: [PATCH] bpf: fix possible spectre-v1 in find_and_alloc_map() | From | Daniel Borkmann <> | Date | Fri, 4 May 2018 02:16:31 +0200 |
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On 05/03/2018 06:04 PM, Mark Rutland wrote: > It's possible for userspace to control attr->map_type. Sanitize it when > using it as an array index to prevent an out-of-bounds value being used > under speculation. > > Found by smatch. > > Signed-off-by: Mark Rutland <mark.rutland@arm.com> > Cc: Alexei Starovoitov <ast@kernel.org> > Cc: Dan Carpenter <dan.carpenter@oracle.com> > Cc: Daniel Borkmann <daniel@iogearbox.net> > Cc: Peter Zijlstra <peterz@infradead.org> > Cc: netdev@vger.kernel.org
Applied to bpf tree, thanks Mark! I've also just submitted one for BPF progs (http://patchwork.ozlabs.org/patch/908385/) which is same situation.
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