[FFmpeg-devel] [PATCH] avcodec/jpeg2000: Check that codsty->log2_prec_widths/heights has been initialized

[Michael Niedermayer]

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>
---
 libavcodec/jpeg2000.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c
index 94efc94c4d..9e1bbc2ec4 100644
--- a/libavcodec/jpeg2000.c
+++ b/libavcodec/jpeg2000.c
@@ -506,6 +506,10 @@ 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) {
+            av_log(avctx, AV_LOG_ERROR, "COD/COC is missing\n");
+            return AVERROR_INVALIDDATA;
+        }
 
         /* Number of bands for each resolution level */
         if (reslevelno == 0)
-- 
2.14.1