[FFmpeg-cvslog] avcodec/svq3: fix slice size check

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Aug 20 22:09:54 2016 +0200| [2624695484cde26baedac10192856ebfd97f2cc7] | committer: Michael Niedermayer

avcodec/svq3: fix slice size check

Fixes out of array read
Fixes: 09f46aa2175cade93e3e3932646a56a9/asan_heap-oob_4a5385_2995_498f6abfdc0248288cefe5f4b7ad316c.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=2624695484cde26baedac10192856ebfd97f2cc7
---

 libavcodec/svq3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index bb4508c..653a6db 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1040,7 +1040,7 @@ static int svq3_decode_slice_header(AVCodecContext *avctx)
         slice_bits   = slice_length * 8;
         slice_bytes  = slice_length + length - 1;
 
-        if (slice_bytes > get_bits_left(&s->gb)) {
+        if (8LL*slice_bytes > get_bits_left(&s->gb)) {
             av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n");
             return -1;
         }