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-rw-r--r--net/sctp/socket.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index afa952e726d7..9b9b2c31dd15 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3144,7 +3144,7 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
goto out;
}
- if (authkey->sca_keylength > optlen) {
+ if (authkey->sca_keylength > optlen - sizeof(struct sctp_authkey)) {
ret = -EINVAL;
goto out;
}