From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Mon, 28 Apr 2008 05:40:55 +0000 (+0900)
Subject: ipv6 mcast: Check address family of gf_group in getsockopt(MS_FILTER).
X-Git-Tag: Ubuntu-5.13.0-19.19~41806^2~5^2~4
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=20c61fbd8deb2ada0ac3acecf6156a986dbfff2d;p=mirror_ubuntu-jammy-kernel.git

ipv6 mcast: Check address family of gf_group in getsockopt(MS_FILTER).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
---

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 26b83e512a09..ce794d6acb70 100644
--- 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);