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| author | David S. Miller <davem@davemloft.net> | 2008-06-28 01:19:40 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-06-28 01:19:40 -0700 |
| commit | 1b63ba8a86c85524a8d7e5953b314ce71ebcb9c9 (patch) | |
| tree | fe3dc41cbb47ae12b7c3faf6a88b097349e50d5a /net/ipv6/ipv6_sockglue.c | |
| parent | e35c3269edba151e1c703d87068a28ce2cd65bb0 (diff) | |
| parent | d420895efb259a78dda50f95289571faa6e10e41 (diff) | |
| download | lwn-1b63ba8a86c85524a8d7e5953b314ce71ebcb9c9.tar.gz lwn-1b63ba8a86c85524a8d7e5953b314ce71ebcb9c9.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl4965-base.c
Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index a9988841172a..030c0c956f9d 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -343,18 +343,21 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, case IPV6_DSTOPTS: { struct ipv6_txoptions *opt; + + /* remove any sticky options header with a zero option + * length, per RFC3542. + */ if (optlen == 0) optval = NULL; + else if (optlen < sizeof(struct ipv6_opt_hdr) || + optlen & 0x7 || optlen > 8 * 255) + goto e_inval; /* hop-by-hop / destination options are privileged option */ retv = -EPERM; if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW)) break; - if (optlen < sizeof(struct ipv6_opt_hdr) || - optlen & 0x7 || optlen > 8 * 255) - goto e_inval; - opt = ipv6_renew_options(sk, np->opt, optname, (struct ipv6_opt_hdr __user *)optval, optlen); |