Fixes invalid reads.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:[email protected]
---
libavcodec/h264.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 1444fc6..9870174 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -4552,7 +4552,7 @@ static int decode_nal_units(H264Context *h, const uint8_t
*buf, int buf_size,
h->workaround_bugs |= FF_BUG_TRUNCATED;
if (!(h->workaround_bugs & FF_BUG_TRUNCATED))
- while (ptr[dst_length - 1] == 0 && dst_length > 0)
+ while (dst_length > 0 && ptr[dst_length - 1] == 0)
dst_length--;
bit_length = !dst_length ? 0
: (8 * dst_length -
--
1.7.10.4
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