[FFmpeg-devel] [PATCH] avcodec/bsf/ahx_to_mp2: Don't output uninitialized data (PR #20591)

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

PR #20591 opened by mkver
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20591
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20591.patch


>From 0cdb58004bee28b183894a0cb91f12d247e5a835 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Wed, 24 Sep 2025 04:34:47 +0200
Subject: [PATCH] avcodec/bsf/ahx_to_mp2: Don't output uninitialized data

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/bsf/ahx_to_mp2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/bsf/ahx_to_mp2.c b/libavcodec/bsf/ahx_to_mp2.c
index eae71fe5ee..8e30c5b1db 100644
--- a/libavcodec/bsf/ahx_to_mp2.c
+++ b/libavcodec/bsf/ahx_to_mp2.c
@@ -44,11 +44,13 @@ static int filter(AVBSFContext *ctx, AVPacket *pkt)
         return ret;
 
     if (pkt->size < 1044) {
+        int original_size = pkt->size;
         ret = av_grow_packet(pkt, 1044-pkt->size);
         if (ret < 0) {
             av_packet_unref(pkt);
             return ret;
         }
+        memset(pkt->data + original_size, 0, 1044 - original_size);
     }
 
     return 0;
-- 
2.49.1

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