[FFmpeg-cvslog] avcodec/ilbcdec: Initialize tempbuff2

[Michael Niedermayer]

ffmpeg | branch: release/4.3 | Michael Niedermayer <michael at niedermayer.cc> | Mon Sep 23 19:57:28 2024 +0200| [421207a390cde037ad85b78f236b23b0d2540384] | committer: Michael Niedermayer

avcodec/ilbcdec: Initialize tempbuff2

Fixes: Use of uninitialized value
Fixes: 71350/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ILBC_fuzzer-6322020827070464

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 4482218440534804d067de00ee1a4bc493c8b41d)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=421207a390cde037ad85b78f236b23b0d2540384
---

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

diff --git a/libavcodec/ilbcdec.c b/libavcodec/ilbcdec.c
index 45f9e2cc36..81e51d105d 100644
--- a/libavcodec/ilbcdec.c
+++ b/libavcodec/ilbcdec.c
@@ -653,7 +653,7 @@ static void get_codebook(int16_t * cbvec,   /* (o) Constructed codebook vector *
     int16_t k, base_size;
     int16_t lag;
     /* Stack based */
-    int16_t tempbuff2[SUBL + 5];
+    int16_t tempbuff2[SUBL + 5] = {0};
 
     /* Determine size of codebook sections */
     base_size = lMem - cbveclen + 1;