Re: [PATCH] net: filter: fix upper BPF instruction limit

From: Daniel Borkmann
Date: Wed Jun 18 2014 - 18:43:44 EST


On 06/19/2014 12:34 AM, Kees Cook wrote:
The original checks (via sk_chk_filter) for instruction count uses ">",
not ">=", so changing this in sk_convert_filter has the potential to break
existing seccomp filters that used exactly BPF_MAXINSNS many instructions.

Fixes: bd4cf0ed331a ("net: filter: rework/optimize internal BPF interpreter's instruction set")
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>

Acked-by: Daniel Borkmann <dborkman@xxxxxxxxxx>
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