avcodec/jpeg2000dec: Assert that step_x/y are valid

Fixes CID1322304, CID1322305 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
10 years ago · 9e70475551
parent 205c31b301
commit 9e70475551
1 changed files with 1 additions and 0 deletions
--- a/libavcodec/jpeg2000dec.c
+++ b/libavcodec/jpeg2000dec.c
@ -1111,6 +1111,7 @@ static int jpeg2000_decode_packets_po_iteration(Jpeg2000DecoderContext *s, Jpeg2
                step_x = FFMIN(step_x, rlevel->log2_prec_width  + reducedresno);
                step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
            }
+            av_assert0(step_x < 32 && step_y < 32);
            step_x = 1<<step_x;
            step_y = 1<<step_y;