[FFmpeg-cvslog] avcodec/cbs_vp9: Initialize VP9RawSuperframeIndex

[Michael Niedermayer]

ffmpeg | branch: release/4.3 | Michael Niedermayer <michael at niedermayer.cc> | Wed Jan  1 05:03:08 2025 +0100| [2f8015878121ef5b2f90c791377de70ee5bc69f3] | committer: Michael Niedermayer

avcodec/cbs_vp9: Initialize VP9RawSuperframeIndex

Fixes: use-of-uninitialized-value
Fixes: 70907/clusterfuzz-testcase-minimized-ffmpeg_BSF_VP9_METADATA_fuzzer-6339363208757248

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit e81d410242ea604c4f667da4a415836c1575d72f)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2f8015878121ef5b2f90c791377de70ee5bc69f3
---

 libavcodec/cbs_vp9.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/cbs_vp9.c b/libavcodec/cbs_vp9.c
index eef603bfb2..e6300a4843 100644
--- a/libavcodec/cbs_vp9.c
+++ b/libavcodec/cbs_vp9.c
@@ -422,7 +422,7 @@ static int cbs_vp9_split_fragment(CodedBitstreamContext *ctx,
     superframe_header = frag->data[frag->data_size - 1];
 
     if ((superframe_header & 0xe0) == 0xc0) {
-        VP9RawSuperframeIndex sfi;
+        VP9RawSuperframeIndex sfi = {0};
         GetBitContext gbc;
         size_t index_size, pos;
         int i;