[FFmpeg-devel] [PATCH 3/6] avcodec/movtextenc: Check for too long subtitles
Andreas Rheinhardt
andreas.rheinhardt at outlook.com
Tue Nov 30 12:50:40 EET 2021
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
libavcodec/movtextenc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/movtextenc.c b/libavcodec/movtextenc.c
index 46109e0a5e..eecadaf503 100644
--- a/libavcodec/movtextenc.c
+++ b/libavcodec/movtextenc.c
@@ -667,6 +667,8 @@ static int mov_text_encode_frame(AVCodecContext *avctx, unsigned char *buf,
}
}
+ if (s->byte_count > UINT16_MAX)
+ return AVERROR(ERANGE);
AV_WB16(buf, s->byte_count);
buf += 2;
--
2.32.0
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