mmvideo: restore initial y value.

This bug might have been exploitable (out of HEAP buffer writes) Bug introduced by libav commit a55d5bdc6e Date: Tue Mar 6 15:15:42 2012 -0800 algmm: convert to bytestream2 API.
13 years ago · c2e3b564b3
parent 67c90d2605
commit c2e3b564b3
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/mmvideo.c
+++ b/libavcodec/mmvideo.c
@ -127,7 +127,7 @@ static int mm_decode_intra(MmContext * s, int half_horiz, int half_vert)
 */
 static int mm_decode_inter(MmContext * s, int half_horiz, int half_vert)
 {
-    int data_off = bytestream2_get_le16(&s->gb), y;
+    int data_off = bytestream2_get_le16(&s->gb), y = 0;
    GetByteContext data_ptr;

    if (bytestream2_get_bytes_left(&s->gb) < data_off)