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net/ipv6/mcast: Use struct_size() helper

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Replace IP6_SFLSIZE() with struct_size() helper in order to avoid any
potential type mistakes or integer overflows that, in the worst
scenario, could lead to heap overflows.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva
2021-08-04 16:43:52 -05:00
committed by David S. Miller
parent e6a1f7e0b0
commit e11c0e258c
2 changed files with 13 additions and 10 deletions
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3
include/net/if_inet6.h
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@@ -82,9 +82,6 @@ struct ip6_sf_socklist {
struct in6_addr sl_addr[];
};
#define IP6_SFLSIZE(count) (sizeof(struct ip6_sf_socklist) + \
(count) * sizeof(struct in6_addr))
#define IP6_SFBLOCK 10 /* allocate this many at once */
struct ipv6_mc_socklist {