[FFmpeg-devel] [PATCH] avformat/flvdec: Fix leak of channel layout map (PR #21228)

[mkver via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

PR #21228 opened by mkver
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21228
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21228.patch

Fixes: memleak
Fixes: 418396714/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-4595253332213760

Found-by:  continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg


>From b07ee9ed5d5e3cdb428b1cb4cb5d2d90e54ac2ec Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Wed, 17 Dec 2025 15:44:34 +0100
Subject: [PATCH] avformat/flvdec: Fix leak of channel layout map

Fixes: memleak
Fixes: 418396714/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-4595253332213760

Found-by:  continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavformat/flvdec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 296d600cec..c75345d882 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -1635,6 +1635,7 @@ retry_duration:
             if (!av_channel_layout_check(&st->codecpar->ch_layout) ||
                 !st->codecpar->sample_rate ||
                 !st->codecpar->bits_per_coded_sample) {
+                av_channel_layout_uninit(&st->codecpar->ch_layout);
                 av_channel_layout_default(&st->codecpar->ch_layout, channels);
                 st->codecpar->sample_rate           = sample_rate;
                 st->codecpar->bits_per_coded_sample = bits_per_coded_sample;
-- 
2.49.1

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