We subtract 24 so it must be at least 24
Fixes: CID1604482 Overflowed constant
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/asfdec_o.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/asfdec_o.c b/libavformat/asfdec_o.c
index dfe448e9f7e..dd187e600d0 100644
--- a/libavformat/asfdec_o.c
+++ b/libavformat/asfdec_o.c
@@ -867,6 +867,9 @@ static int asf_read_simple_index(AVFormatContext *s, const
GUIDParseTable *g)
int64_t offset;
uint64_t size = avio_rl64(pb);
+ if (size < 24)
+ return AVERROR_INVALIDDATA;
+
// simple index objects should be ordered by stream number, this loop
tries to find
// the first not indexed video stream
for (i = 0; i < asf->nb_streams; i++) {
--
2.45.2
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