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ipv6 mcast: Check address family of gf_group in getsockopt(MS_FILTER).
[GitHub/mt8127/android_kernel_alcatel_ttab.git]
/
net
/
ipv6
/
ipv6_sockglue.c
diff --git
a/net/ipv6/ipv6_sockglue.c
b/net/ipv6/ipv6_sockglue.c
index 26b83e512a0922d86c38144a1c53052b0163eed7..ce794d6acb708a4d78765e00a039a0b27a3bc7b5 100644
(file)
--- a/
net/ipv6/ipv6_sockglue.c
+++ b/
net/ipv6/ipv6_sockglue.c
@@
-874,6
+874,8
@@
static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
return -EINVAL;
if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
return -EFAULT;
+ if (gsf.gf_group.ss_family != AF_INET6)
+ return -EADDRNOTAVAIL;
lock_sock(sk);
err = ip6_mc_msfget(sk, &gsf,
(struct group_filter __user *)optval, optlen);