[FFmpeg-cvslog] avformat/avienc: Check video dimensions

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Jul  3 14:05:13 2022 +0200| [ba0c3d1db420dfaeaec44a8bbd40ec5593dccb04] | committer: Michael Niedermayer

avformat/avienc: Check video dimensions

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ba0c3d1db420dfaeaec44a8bbd40ec5593dccb04
---

 libavformat/avienc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/avienc.c b/libavformat/avienc.c
index 2264241d57..14115b3e2b 100644
--- a/libavformat/avienc.c
+++ b/libavformat/avienc.c
@@ -426,6 +426,10 @@ static int avi_write_header(AVFormatContext *s)
         avio_wl32(pb, -1); /* quality */
         avio_wl32(pb, au_ssize); /* sample size */
         avio_wl32(pb, 0);
+        if (par->width > 65535 || par->height > 65535) {
+            av_log(s, AV_LOG_ERROR, "%dx%d dimensions are too big\n", par->width, par->height);
+            return AVERROR(EINVAL);
+        }
         avio_wl16(pb, par->width);
         avio_wl16(pb, par->height);
         ff_end_tag(pb, strh);