diff options
Diffstat (limited to 'net/sctp/socket.c')
| -rw-r--r-- | net/sctp/socket.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 9b9b2c31dd1..5ffb9dec1c3 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3086,6 +3086,7 @@ static int sctp_setsockopt_hmac_ident(struct sock *sk, int optlen) { struct sctp_hmacalgo *hmacs; + u32 idents; int err; if (!sctp_auth_enable) @@ -3103,8 +3104,9 @@ static int sctp_setsockopt_hmac_ident(struct sock *sk, goto out; } - if (hmacs->shmac_num_idents == 0 || - hmacs->shmac_num_idents > SCTP_AUTH_NUM_HMACS) { + idents = hmacs->shmac_num_idents; + if (idents == 0 || idents > SCTP_AUTH_NUM_HMACS || + (idents * sizeof(u16)) > (optlen - sizeof(struct sctp_hmacalgo))) { err = -EINVAL; goto out; } |