[FFmpeg-cvslog] avcodec/jpeg2000: Check that codsty->log2_prec_widths/heights has been initialized
Michael Niedermayer
git at videolan.org
Thu Oct 26 19:37:28 EEST 2017
ffmpeg | branch: release/3.3 | Michael Niedermayer <michael at niedermayer.cc> | Mon Sep 4 22:23:26 2017 +0200| [c54317a17e576700e0d936f0bf6b89dba77b4c73] | committer: Michael Niedermayer
avcodec/jpeg2000: Check that codsty->log2_prec_widths/heights has been initialized
Fixes: OOM
Fixes: 2225/clusterfuzz-testcase-minimized-5505632079708160
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 64e034da954125ef98fb8f9153f9706cdb8a96fe)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c54317a17e576700e0d936f0bf6b89dba77b4c73
---
libavcodec/jpeg2000.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c
index 94efc94c4d..afeb9df27c 100644
--- a/libavcodec/jpeg2000.c
+++ b/libavcodec/jpeg2000.c
@@ -506,6 +506,9 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp,
// update precincts size: 2^n value
reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno];
reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno];
+ if (!reslevel->log2_prec_width || !reslevel->log2_prec_height) {
+ return AVERROR_INVALIDDATA;
+ }
/* Number of bands for each resolution level */
if (reslevelno == 0)
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