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From: Lynne via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>
To: ffmpeg-devel@ffmpeg.org
Cc: Lynne <dev@lynne.ee>
Subject: [FFmpeg-devel] [PATCH] aacdec: set ac->output_elements upon channel element free
Date: Mon, 22 Jul 2024 03:22:31 +0200
Message-ID: <20240722012237.819610-1-dev@lynne.ee> (raw)

The issue is that ac->output_elements is populated from
ac->che, which may be freed, leaving dangling pointers in this
list.

Should fix clusterfuzz.
---
 libavcodec/aac/aacdec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/aac/aacdec.c b/libavcodec/aac/aacdec.c
index ea2ba84a80..c37de2e003 100644
--- a/libavcodec/aac/aacdec.c
+++ b/libavcodec/aac/aacdec.c
@@ -166,6 +166,7 @@ static av_cold int che_configure(AACDecContext *ac,
             ac->proc.sbr_ctx_close(ac->che[type][id]);
         }
         av_freep(&ac->che[type][id]);
+        memset(ac->output_element, 0, sizeof(ac->output_element));
     }
     return 0;
 }
-- 
2.45.2.753.g447d99e1c3b
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             reply	other threads:[~2024-07-22  1:22 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-22  1:22 Lynne via ffmpeg-devel [this message]
2024-07-23 15:30 ` Michael Niedermayer

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