ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun 
Aug 11 23:15:32 2024 +0200| [7eeeda703b599847aa89c7c08bb433d0b3da9590] | 
committer: Michael Niedermayer

avcodec/hapdec: Clear tex buffer

The code following makes no attempt to initialize all of the buffer

Fixes: use of uninitialized value
Fixes: 
70980/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HAP_fuzzer-5329909059223552

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7eeeda703b599847aa89c7c08bb433d0b3da9590
---

 libavcodec/hapdec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/hapdec.c b/libavcodec/hapdec.c
index 918eff7876..70bf592f2a 100644
--- a/libavcodec/hapdec.c
+++ b/libavcodec/hapdec.c
@@ -310,6 +310,7 @@ static int hap_decode(AVCodecContext *avctx, AVFrame *frame,
             ret = av_reallocp(&ctx->tex_buf, ctx->tex_size);
             if (ret < 0)
                 return ret;
+            memset(ctx->tex_buf, 0, ctx->tex_size);
 
             avctx->execute2(avctx, decompress_chunks_thread, NULL,
                             ctx->chunk_results, ctx->chunk_count);

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