Fixes: signed integer overflow: -2272 + -2147483360 cannot be represented in 
type 'int'
Fixes: 
30009/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5005660322398208

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/exr.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/exr.c b/libavcodec/exr.c
index 6e6ce4275c..752ab17d7a 100644
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@@ -1029,6 +1029,11 @@ static int decode_block(AVCodecContext *avctx, void 
*tdata,
             return AVERROR_PATCHWELCOME;
         }
 
+        if (tile_x && s->tile_attr.xSize + (int64_t)FFMAX(s->xmin, 0) >= 
INT_MAX / tile_x )
+            return AVERROR_INVALIDDATA;
+        if (tile_y && s->tile_attr.ySize + (int64_t)FFMAX(s->ymin, 0) >= 
INT_MAX / tile_y )
+            return AVERROR_INVALIDDATA;
+
         line = s->ymin + s->tile_attr.ySize * tile_y;
         col = s->tile_attr.xSize * tile_x;
 
-- 
2.17.1

_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

Reply via email to