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| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2007-07-22 18:24:56 +0200 |
|---|---|---|
| committer | Adrian Bunk <bunk@stusta.de> | 2007-07-22 18:24:56 +0200 |
| commit | c88fee3c266ce5147abf2f4efd9bed4249e122d4 (patch) | |
| tree | 29a237185148eb45915c6034d25f844f9ae6e012 | |
| parent | c08c47f63dfeaebb96096f9c1c1b23e4aabc5eed (diff) | |
| download | lwn-c88fee3c266ce5147abf2f4efd9bed4249e122d4.tar.gz lwn-c88fee3c266ce5147abf2f4efd9bed4249e122d4.zip | |
SCTP: Add scope_id validation for link-local binds
SCTP currently permits users to bind to link-local addresses,
but doesn't verify that the scope id specified at bind matches
the interface that the address is configured on. It was report
that this can hang a system.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
| -rw-r--r-- | net/sctp/ipv6.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index c068d53e5415..ab1c01a1d0f9 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -840,6 +840,10 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr) dev = dev_get_by_index(addr->v6.sin6_scope_id); if (!dev) return 0; + if (!ipv6_chk_addr(&addr->v6.sin6_addr, dev, 0)) { + dev_put(dev); + return 0; + } dev_put(dev); } af = opt->pf->af; |