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| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2024-05-22 06:57:19 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2024-05-25 13:51:27 +0200 |
| commit | d8cad01805be74783344d69e81c9c31f49ba4d92 (patch) | |
| tree | 31f6a67081a367badf05d5770de1932f3d98d151 /libavformat | |
| parent | cf6d07522a37ea9508468ffc43a0299f3e1c014c (diff) | |
| download | ffmpeg-d8cad01805be74783344d69e81c9c31f49ba4d92.tar.gz | |
avformat/dhav: Check amount read
Prevents potential use of uninitialized data in the following
memcmp().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/dhav.c | 4 |
1 files changed, 3 insertions, 1 deletions
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); |