[FFmpeg-devel] [PATCH 2/3] avcodec/exr: Fix undefined integer multiplication

[Michael Niedermayer]

Fixes: signed integer overflow: 7020950083487072256 * 2 cannot be represented in type 'long long'
Fixes: 37523/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5133634955771904

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/exr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/exr.c b/libavcodec/exr.c
index 67340c892da..c395b6098df 100644
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@@ -1062,7 +1062,7 @@ static int dwa_uncompress(EXRContext *s, const uint8_t *src, int compressed_size
     }
 
     {
-        unsigned long dest_len = dc_count * 2LL;
+        unsigned long dest_len = dc_count * 2ULL;
         GetByteContext agb = gb;
 
         if (dc_count != dc_w * dc_h * 3)
-- 
2.17.1