[FFmpeg-devel] [PATCH] avformat/whip: Fix rtp_ctx->streams access (PR #20805)

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

PR #20805 opened by michaelni
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20805
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20805.patch

Fixes: out of array access
No testcase

Found-by: Joshua Rogers <joshua@joshua.hu> with ZeroPath
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>


>From e01eb935a6b919d0bc4361e30a0ab00ff01783af Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Fri, 31 Oct 2025 18:00:11 +0100
Subject: [PATCH] avformat/whip: Fix rtp_ctx->streams access

Fixes: out of array access
No testcase

Found-by: Joshua Rogers <joshua@joshua.hu> with ZeroPath
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/whip.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/whip.c b/libavformat/whip.c
index a11fffb9c6..6a9b208f69 100644
--- a/libavformat/whip.c
+++ b/libavformat/whip.c
@@ -1592,8 +1592,8 @@ static int create_rtp_muxer(AVFormatContext *s)
          * therefore, we deactivate the extradata detection for the RTP muxer.
          */
         if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_H264) {
-            av_freep(&rtp_ctx->streams[i]->codecpar->extradata);
-            rtp_ctx->streams[i]->codecpar->extradata_size = 0;
+            av_freep(&rtp_ctx->streams[0]->codecpar->extradata);
+            rtp_ctx->streams[0]->codecpar->extradata_size = 0;
         }
 
         buffer = av_malloc(buffer_size);
-- 
2.49.1

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