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genetlink: trigger BUG_ON if a group name is too long
author
Masatake YAMATO
<yamato@redhat.com>
Tue, 19 Mar 2013 01:47:27 +0000
(
01:47
+0000)
committer
David S. Miller
<davem@davemloft.net>
Wed, 20 Mar 2013 16:05:51 +0000
(12:05 -0400)
Trigger BUG_ON if a group name is longer than GENL_NAMSIZ.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/netlink/genetlink.c
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diff --git
a/net/netlink/genetlink.c
b/net/netlink/genetlink.c
index
f2aabb6
..
5a55be3
100644
(file)
--- a/
net/netlink/genetlink.c
+++ b/
net/netlink/genetlink.c
@@
-142,6
+142,7
@@
int genl_register_mc_group(struct genl_family *family,
int err = 0;
BUG_ON(grp->name[0] == '\0');
+ BUG_ON(memchr(grp->name, '\0', GENL_NAMSIZ) == NULL);
genl_lock();