From 19b66b89da4b4ff086dc1fc79bbf540e82bdbcb4 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sun, 16 Apr 2023 17:34:16 +0200
Subject: [PATCH] avcodec/tak: Check remaining bits in
 ff_tak_decode_frame_header()

Fixes: out of array access
Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-6682195323650048

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/tak.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/tak.c b/libavcodec/tak.c
index 628609b71b..99678e9887 100644
--- a/libavcodec/tak.c
+++ b/libavcodec/tak.c
@@ -175,6 +175,9 @@ int ff_tak_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
     if (ti->flags & TAK_FRAME_FLAG_HAS_METADATA)
         return AVERROR_INVALIDDATA;
 
+    if (get_bits_left(gb) < 24)
+        return AVERROR_INVALIDDATA;
+
     skip_bits(gb, 24);
 
     return 0;