network plugin: Fix heap overflow in parse_packet().

[collectd.git] / src / network.c

diff --git a/src/network.c b/src/network.c
index 0ee6ed0..5c7761d 100644 (file)
--- a/src/network.c
+++ b/src/network.c
@@ -1435,6 +1435,7 @@ static int parse_packet (sockent_t *se, /* {{{ */
                                printed_ignore_warning = 1;
                        }
                        buffer = ((char *) buffer) + pkg_length;
+                       buffer_size -= (size_t) pkg_length;
                        continue;
                }
 #endif /* HAVE_LIBGCRYPT */
@@ -1462,6 +1463,7 @@ static int parse_packet (sockent_t *se, /* {{{ */
                                printed_ignore_warning = 1;
                        }
                        buffer = ((char *) buffer) + pkg_length;
+                       buffer_size -= (size_t) pkg_length;
                        continue;
                }
 #endif /* HAVE_LIBGCRYPT */
@@ -1603,6 +1605,7 @@ static int parse_packet (sockent_t *se, /* {{{ */
                        DEBUG ("network plugin: parse_packet: Unknown part"
                                        " type: 0x%04hx", pkg_type);
                        buffer = ((char *) buffer) + pkg_length;
+                       buffer_size -= (size_t) pkg_length;
                }
        } /* while (buffer_size > sizeof (part_header_t)) */