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-rw-r--r--libavcodec/h264_mp4toannexb_bsf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/h264_mp4toannexb_bsf.c b/libavcodec/h264_mp4toannexb_bsf.c
index f9c3621d3f..82b6364fae 100644
--- a/libavcodec/h264_mp4toannexb_bsf.c
+++ b/libavcodec/h264_mp4toannexb_bsf.c
@@ -150,7 +150,7 @@ pps:
buf += ctx->length_size;
unit_type = *buf & 0x1f;
- if (buf + nal_size > buf_end || nal_size < 0)
+ if (nal_size > buf_end - buf || nal_size < 0)
goto fail;
/* prepend only to the first type 5 NAL unit of an IDR picture */