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[FFmpeg-devel,2/3] avcodec/mpeg_er: Clear mcsel in mpeg_er_decode_mb()

Message ID 20171009003408.32057-2-michael@niedermayer.cc
State Accepted
Commit 127a362630e11fe724e2e63fc871791fdcbcfa64
Headers show

Commit Message

Michael Niedermayer Oct. 9, 2017, 12:34 a.m. UTC 
Fixes out of array read
Should fix: 3516/clusterfuzz-testcase-minimized-4608518562775040 (not reprodoceable)

Found-by: Insu Yun, Georgia Tech.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/mpeg_er.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/libavcodec/mpeg_er.c b/libavcodec/mpeg_er.c
index 5eca834072..ada1a1692f 100644
--- a/libavcodec/mpeg_er.c
+++ b/libavcodec/mpeg_er.c
@@ -71,6 +71,7 @@  static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
     s->mb_skipped = mb_skipped;
     s->mb_x       = mb_x;
     s->mb_y       = mb_y;
+    s->mcsel      = 0;
     memcpy(s->mv, mv, sizeof(*mv));
 
     ff_init_block_index(s);