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authorVlad Yasevich <vladislav.yasevich@hp.com>2008-08-25 15:16:19 -0700
committerDavid S. Miller <davem@davemloft.net>2008-08-25 15:16:19 -0700
commit30c2235cbc477d4629983d440cdc4f496fec9246 (patch)
treec280fcf36c472f1a21a58f74a2dc76dbf337859e /net/sctp/socket.c
parentf410a1fba7afa79d2992620e874a343fdba28332 (diff)
downloadop-kernel-dev-30c2235cbc477d4629983d440cdc4f496fec9246.zip
op-kernel-dev-30c2235cbc477d4629983d440cdc4f496fec9246.tar.gz
sctp: add verification checks to SCTP_AUTH_KEY option
The structure used for SCTP_AUTH_KEY option contains a length that needs to be verfied to prevent buffer overflow conditions. Spoted by Eugene Teo <eteo@redhat.com>. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/socket.c')
-rw-r--r--net/sctp/socket.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index bb5c9ef..afa952e 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3144,6 +3144,11 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
goto out;
}
+ if (authkey->sca_keylength > optlen) {
+ ret = -EINVAL;
+ goto out;
+ }
+
asoc = sctp_id2assoc(sk, authkey->sca_assoc_id);
if (!asoc && authkey->sca_assoc_id && sctp_style(sk, UDP)) {
ret = -EINVAL;
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