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Date: Mon, 31 Mar 2008 17:08:38 +0800 From: Wang Chen <wangchen@...fujitsu.com> To: "David S. Miller" <davem@...emloft.net>, YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org> CC: NETDEV <netdev@...r.kernel.org> Subject: [2.6 PATCH] IPV6: Check length of optval provided by user in setsockopt() Check length of setsockopt's optval, which provided by user, before copy it from user space. Signed-off-by: Wang Chen <wangchen@...fujitsu.com> --- net/ipv6/ipv6_sockglue.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index bf2a686..1ad0ac9 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -557,6 +557,9 @@ done: { struct ipv6_mreq mreq; + if (optlen != sizeof(struct ipv6_mreq)) + goto e_inval; + retv = -EPROTO; if (inet_sk(sk)->is_icsk) break; @@ -595,6 +598,9 @@ done: struct group_req greq; struct sockaddr_in6 *psin6; + if (optlen != sizeof(struct group_req)) + goto e_inval; + retv = -EFAULT; if (copy_from_user(&greq, optval, sizeof(struct group_req))) break; -- 1.5.3.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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