@@ -233,8 +233,14 @@ static int asfrtp_parse_packet(AVFormatContext *s, PayloadContext *asf,

                 int cur_len = start_off + len_off - off;

                 int prev_len = out_len;

+                void *newmem;

                 out_len += cur_len;

-                asf->buf = av_realloc(asf->buf, out_len);

+                if (FFMIN(cur_len, len - off) < 0)

+                    return -1;

+                newmem = av_realloc(asf->buf, out_len);

+                if (!newmem)

+                    return -1;

+                asf->buf = newmem;

                 memcpy(asf->buf + prev_len, buf + off,

                        FFMIN(cur_len, len - off));

                 avio_skip(pb, cur_len);