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-rw-r--r--libavformat/asfdec.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c
index 58480dc36a..4fc0e3dbb0 100644
--- a/libavformat/asfdec.c
+++ b/libavformat/asfdec.c
@@ -178,6 +178,9 @@ static int asf_read_unknown(AVFormatContext *s, const GUIDParseTable *g)
uint64_t size = avio_rl64(pb);
int ret;
+ if (size > INT64_MAX)
+ return AVERROR_INVALIDDATA;
+
if (asf->is_header)
asf->unknown_size = size;
asf->is_header = 0;