diff options
| -rw-r--r-- | sys/rpc/rpcsec_gss/rpcsec_gss_prot.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sys/rpc/rpcsec_gss/rpcsec_gss_prot.c b/sys/rpc/rpcsec_gss/rpcsec_gss_prot.c index a50c4fa..90c6fe2 100644 --- a/sys/rpc/rpcsec_gss/rpcsec_gss_prot.c +++ b/sys/rpc/rpcsec_gss/rpcsec_gss_prot.c @@ -208,6 +208,8 @@ m_trim(struct mbuf *m, int len) struct mbuf *n; int off; + if (m == NULL) + return; n = m_getptr(m, len, &off); if (n) { n->m_len = off; @@ -251,10 +253,19 @@ xdr_rpc_gss_unwrap_data(struct mbuf **resultsp, * Extract the MIC and make it contiguous. */ cklen = get_uint32(&results); + if (!results) { + m_freem(message); + return (FALSE); + } KASSERT(cklen <= MHLEN, ("unexpected large GSS-API checksum")); mic = results; - if (cklen > mic->m_len) + if (cklen > mic->m_len) { mic = m_pullup(mic, cklen); + if (!mic) { + m_freem(message); + return (FALSE); + } + } if (cklen != RNDUP(cklen)) m_trim(mic, cklen); @@ -272,6 +283,8 @@ xdr_rpc_gss_unwrap_data(struct mbuf **resultsp, } else if (svc == rpc_gss_svc_privacy) { /* Decode databody_priv. */ len = get_uint32(&results); + if (!results) + return (FALSE); /* Decrypt databody. */ message = results; @@ -294,6 +307,8 @@ xdr_rpc_gss_unwrap_data(struct mbuf **resultsp, /* Decode rpc_gss_data_t (sequence number + arguments). */ seq_num = get_uint32(&message); + if (!message) + return (FALSE); /* Verify sequence number. */ if (seq_num != seq) { |
