[FFmpeg-cvslog] avcodec/utils: Clear dimensions in ff_get_buffer() on failure

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Nov 28 20:08:46 2015 +0100| [abee0a1c60612e8638640a8a3738fffb65e16dbf] | committer: Michael Niedermayer

avcodec/utils: Clear dimensions in ff_get_buffer() on failure

Fixes out of array access
Fixes: 482d8f2fd17c9f532b586458a33f267c/asan_heap-oob_4a52b6_7417_1d08d477736d66cdadd833d146bb8bae.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=abee0a1c60612e8638640a8a3738fffb65e16dbf
---

 libavcodec/utils.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index e018e44..d00dfae 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -888,8 +888,10 @@ end:
 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
 {
     int ret = get_buffer_internal(avctx, frame, flags);
-    if (ret < 0)
+    if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+        frame->width = frame->height = 0;
+    }
     return ret;
 }