Prevents potential use of uninitialized data in the following
memcmp().
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
libavformat/dhav.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavformat/dhav.c b/libavformat/dhav.c
index 8e08274e68..b2ead99609 100644
--- a/libavformat/dhav.c
+++ b/libavformat/dhav.c
@@ -278,7 +278,9 @@ static int dhav_read_header(AVFormatContext *s)
if (ret < 0)
return ret;
- avio_read(s->pb, signature, sizeof(signature));
+ ret = ffio_read_size(s->pb, signature, sizeof(signature));
+ if (ret < 0)
+ return ret;
if (!memcmp(signature, "DAHUA", 5)) {
avio_skip(s->pb, 0x400 - 5);
dhav->last_good_pos = avio_tell(s->pb);
--
2.40.1
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