[FFmpeg-cvslog] avcodec/ffv1dec: reject unsupported ffv1 versions

[Jerome Martinez]

ffmpeg | branch: master | Jerome Martinez <jerome at mediaarea.net> | Tue Apr  4 16:57:03 2023 +0200| [f0cd5610e0ef34fb5c2b705586fa143c7884ce63] | committer: Michael Niedermayer

avcodec/ffv1dec: reject unsupported ffv1 versions

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f0cd5610e0ef34fb5c2b705586fa143c7884ce63
---

 libavcodec/ffv1dec.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index 180d24e695..a3f9302233 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -439,6 +439,11 @@ static int read_extra_header(FFV1Context *f)
         av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
         return AVERROR_INVALIDDATA;
     }
+    if (f->version > 4) {
+        av_log(f->avctx, AV_LOG_ERROR, "unsupported version %d\n",
+            f->version);
+        return AVERROR_PATCHWELCOME;
+    }
     if (f->version > 2) {
         c->bytestream_end -= 4;
         f->micro_version = get_symbol(c, state, 0);