PR #20559 opened by michaelni
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20559
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20559.patch
Fixes: out of array read
Fixes: BIGSLEEP-445383648
Fixes: crash_input_1/2/3.dhav
Found-by: Google Big Sleep
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
>From e66d02f3c566e42984ad6862bdcbe2a6796ec2a1 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <mich...@niedermayer.cc>
Date: Sat, 20 Sep 2025 01:25:51 +0200
Subject: [PATCH] avformat/dhav: Fix off by length of read element error
Fixes: out of array read
Fixes: BIGSLEEP-445383648
Fixes: crash_input_1/2/3.dhav
Found-by: Google Big Sleep
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/dhav.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/dhav.c b/libavformat/dhav.c
index 21c9c530d6..105a987aa3 100644
--- a/libavformat/dhav.c
+++ b/libavformat/dhav.c
@@ -279,7 +279,7 @@ static int64_t get_duration(AVFormatContext *s)
}
}
- if (pos < buffer_pos || pos + 16 > buffer_pos + buffer_size)
+ if (pos < buffer_pos || pos + 20 > buffer_pos + buffer_size)
goto fail;
date = AV_RL32(buffer + (pos - buffer_pos) + 16);
--
2.49.1
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