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bgpd: fix off-by-one in attribute flags handling

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bgp_attr_flag_invalid can access beyond the last element of attr_flags_values.
Fix this by initializing attr_flags_values_max to the correct value.

Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Christian Franke 2016-06-14 20:07:00 +02:00 committed by Donald Sharp
parent b84ee83b10
commit 099111efa9
1 changed files with 1 additions and 2 deletions
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3
bgpd/bgp_attr.c
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@ -1143,8 +1143,7 @@ const u_int8_t attr_flags_values [] = {
[BGP_ATTR_AS4_PATH] = BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS,
[BGP_ATTR_AS4_AGGREGATOR] = BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS,
};
static const size_t attr_flags_values_max =
sizeof (attr_flags_values) / sizeof (attr_flags_values[0]);
static const size_t attr_flags_values_max = array_size(attr_flags_values) - 1;
static int
bgp_attr_flag_invalid (struct bgp_attr_parser_args *args)