chunk_size is unsigned 32-bit, but av_get_packet() takes a signed int as the
packet size.
---
libavformat/idcin.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/libavformat/idcin.c b/libavformat/idcin.c
index 74875cb..8cd86d1 100644
--- a/libavformat/idcin.c
+++ b/libavformat/idcin.c
@@ -278,6 +278,10 @@ static int idcin_read_packet(AVFormatContext *s,
}
chunk_size = avio_rl32(pb);
+ if (chunk_size < 4 || chunk_size > INT_MAX - 4) {
+ av_log(s, AV_LOG_ERROR, "invalid chunk size: %u\n", chunk_size);
+ return AVERROR_INVALIDDATA;
+ }
/* skip the number of decoded bytes (always equal to width * height) */
avio_skip(pb, 4);
chunk_size -= 4;
--
1.7.1
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