diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2014-11-10 23:07:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-03-12 00:47:05 +0100 |
| commit | f78f7eca1a5ce67db6b1f8a159dc47cc57e8d43a (patch) | |
| tree | 7146c74ea7c69c1ac71938bf1fa8145e5db4fa2a | |
| parent | f3cdeeb070d4793d98b16a7ad66049e537ab7ba7 (diff) | |
| download | ffmpeg-f78f7eca1a5ce67db6b1f8a159dc47cc57e8d43a.tar.gz | |
avcodec/wmaprodec: Fix integer overflow in sfb_offsets initialization
Fixes out of array read
Fixes: asan_heap-oob_2aec5b0_1828_classical_22_16_2_16000_v3c_0_exclusive_0_29.wma
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 5dcb99033df16eccc4dbbc4a099ad64457f9f090)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/wmaprodec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c index 816d95ffc0..67c62a4da0 100644 --- a/libavcodec/wmaprodec.c +++ b/libavcodec/wmaprodec.c @@ -404,6 +404,9 @@ static av_cold int decode_init(AVCodecContext *avctx) offset &= ~3; if (offset > s->sfb_offsets[i][band - 1]) s->sfb_offsets[i][band++] = offset; + + if (offset >= subframe_len) + break; } s->sfb_offsets[i][band - 1] = subframe_len; s->num_sfb[i] = band - 1; |