diff options
| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2007-03-08 20:48:23 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:24:17 -0700 |
| commit | e5268f12f26f1f51590cd1ed26547e21c46b08f2 (patch) | |
| tree | fd5738c838ff2759a81ee452cb09b8ba16035067 /net/ipv6/ipv6_sockglue.c | |
| parent | 4c6510a738c71ca6b4b7b624a7d0a00acebfd7fb (diff) | |
| download | lwn-e5268f12f26f1f51590cd1ed26547e21c46b08f2.tar.gz lwn-e5268f12f26f1f51590cd1ed26547e21c46b08f2.zip | |
[IPV6]: Ensure to truncate result and return full length for sticky options.
Bug noticed by Chris Wright <chrisw@sous-sol.org>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index eceed09e434d..1d56b465bddb 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -825,9 +825,9 @@ static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_txoptions *opt, return 0; len = min_t(unsigned int, len, ipv6_optlen(hdr)); - if (copy_to_user(optval, hdr, ipv6_optlen(hdr))) + if (copy_to_user(optval, hdr, len)); return -EFAULT; - return len; + return ipv6_optlen(hdr); } static int do_ipv6_getsockopt(struct sock *sk, int level, int optname, |