diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-27 20:52:39 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-27 20:59:26 +0100 |
| commit | 75422280fbcdfbe9dc56bde5525b4d8b280f1bc5 (patch) | |
| tree | 58ef2f4266f236604c24991d1773b874eb91bb04 /libavcodec/jpeg2000dwt.c | |
| parent | 8453095f3eb8a635719a85b04773a72b9763a672 (diff) | |
| download | ffmpeg-75422280fbcdfbe9dc56bde5525b4d8b280f1bc5.tar.gz | |
avcodec/jpeg2000dwt: Check ndeclevels before calling dwt_decode*()
Fixes out of array access
Fixes: 01859c9a9ac6cd60a008274123275574/asan_heap-oob_1dff571_8250_50d3d1611e294c3519fd1fa82198b69b.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/jpeg2000dwt.c')
| -rw-r--r-- | libavcodec/jpeg2000dwt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c index 2bf25a8c4e..36e443d478 100644 --- a/libavcodec/jpeg2000dwt.c +++ b/libavcodec/jpeg2000dwt.c @@ -595,6 +595,9 @@ int ff_dwt_encode(DWTContext *s, void *t) int ff_dwt_decode(DWTContext *s, void *t) { + if (s->ndeclevels == 0) + return 0; + switch (s->type) { case FF_DWT97: dwt_decode97_float(s, t); |