Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1669d857a25d62c6d0a6d9216e01c21287a7c844
Commit: 1669d857a25d62c6d0a6d9216e01c21287a7c844
Parent: f50f95cab735ebe2993e8d1549f0615bad05f3f2
Author: Vlad Yasevich <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 3 14:29:23 2007 -0400
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Thu Jul 5 17:40:15 2007 -0700
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 <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
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 84cd536..2c29394 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -844,6 +844,10 @@ static int sctp_inet6_bind_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;
-
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