[FFmpeg-devel] [PATCH 6/6] Check for unsupported parameters in ff_j2k_dwt_init()

[fenrir at elivagar.org]

From: Laurent Aimar <fenrir at videolan.org>

---
 libavcodec/j2k_dwt.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libavcodec/j2k_dwt.c b/libavcodec/j2k_dwt.c
index 9ba770a..ab7a1ab 100644
--- a/libavcodec/j2k_dwt.c
+++ b/libavcodec/j2k_dwt.c
@@ -321,6 +321,8 @@ int ff_j2k_dwt_init(DWTContext *s, uint16_t border[2][2], int decomp_levels, int
     int i, j, lev = decomp_levels, maxlen,
         b[2][2];
 
+    if (decomp_levels >= FF_DWT_MAX_DECLVLS)
+        return AVERROR_INVALIDDATA;
     s->ndeclevels = decomp_levels;
     s->type = type;
 
-- 
1.7.2.5