[FFmpeg-cvslog] libavformat/takdec.c: Fix msan error

[Thierry Foucu]

ffmpeg | branch: master | Thierry Foucu <tfoucu at gmail.com> | Mon Apr  7 11:10:31 2025 -0700| [1d244c641baf6f11d8c3a61c418c760d628fc548] | committer: James Almer

libavformat/takdec.c: Fix msan error

Make sure we are reading 16 bytes for the MD5

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1d244c641baf6f11d8c3a61c418c760d628fc548
---

 libavformat/takdec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/takdec.c b/libavformat/takdec.c
index 21fff3fcbf..01bb16ea7b 100644
--- a/libavformat/takdec.c
+++ b/libavformat/takdec.c
@@ -116,7 +116,8 @@ static int tak_read_header(AVFormatContext *s)
             if (size != 19)
                 return AVERROR_INVALIDDATA;
             ffio_init_checksum(pb, tak_check_crc, 0xCE04B7U);
-            avio_read(pb, md5, 16);
+            if (avio_read(pb, md5, 16) != 16)
+                return AVERROR(EIO);
             if (ffio_get_checksum(s->pb) != avio_rb24(pb)) {
                 av_log(s, AV_LOG_ERROR, "MD5 metadata block CRC error.\n");
                 if (s->error_recognition & AV_EF_EXPLODE)