[FFmpeg-devel] [PATCH 2/2] avutil/aes: Silence fuzzer about accessing round_key

[Michael Niedermayer]

Fixes: index 32 out of bounds for type 'uint8_t [16]'
Fixes: 51253/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5968304170205184

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavutil/aes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/aes.c b/libavutil/aes.c
index 029d738f870..8f3e04e7c6d 100644
--- a/libavutil/aes.c
+++ b/libavutil/aes.c
@@ -251,7 +251,7 @@ int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt)
                     tk[j][i] ^= sbox[tk[j - 1][i]];
         }
 
-        memcpy(a->round_key[0].u8 + t, tk, KC * 4);
+        memcpy((uint8_t*)a->round_key[0].u8 + t, tk, KC * 4);
     }
 
     if (decrypt) {
-- 
2.17.1