From 7eeeda703b599847aa89c7c08bb433d0b3da9590 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 11 Aug 2024 23:15:32 +0200 Subject: [PATCH] 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 --- 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);