diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:31:14 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:31:14 +0200 |
commit | 607baf1f4ef94637ab0f7d0e258932851dc5c0a2 (patch) | |
tree | e5e3ed753fdad4eef8aaed2562df2a1148cec4ab /net/ipv6/ipv6_sockglue.c | |
parent | 064a32d82c20cdcb0119a8b316eb520608d8c647 (diff) | |
parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) |
Merge branch 'linus' into x86/memtesttip-x86-memtest-2008-06-25_10.31_Wed
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 c042ce19bd14..86e28a75267f 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -345,18 +345,21 @@ 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); |