[FFmpeg-cvslog] avcodec/utils: correct align value for interplay

[Michael Niedermayer]

ffmpeg | branch: release/3.2 | Michael Niedermayer <michael at niedermayer.cc> | Wed Jan 25 00:20:19 2017 +0100| [dc2d3856f300dfd215ea5c8fb90bb4a628e829a4] | committer: Michael Niedermayer

avcodec/utils: correct align value for interplay

Fixes out of array access
Fixes: 452/fuzz-1-ffmpeg_VIDEO_AV_CODEC_ID_INTERPLAY_VIDEO_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 2080bc33717955a0e4268e738acf8c1eeddbf8cb)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dc2d3856f300dfd215ea5c8fb90bb4a628e829a4
---

 libavcodec/utils.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 87de15f..2031d01 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -376,6 +376,10 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
             w_align = 4;
             h_align = 4;
         }
+        if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
+            w_align = 8;
+            h_align = 8;
+        }
         break;
     case AV_PIX_FMT_PAL8:
     case AV_PIX_FMT_BGR8:
@@ -385,7 +389,8 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
             w_align = 4;
             h_align = 4;
         }
-        if (s->codec_id == AV_CODEC_ID_JV) {
+        if (s->codec_id == AV_CODEC_ID_JV ||
+            s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
             w_align = 8;
             h_align = 8;
         }