ffmpeg: fix CVE-2025-25473

FFmpeg git master before commit c08d30 was discovered to contain a NULL pointer
dereference via the component libavformat/mov.c.

(From OE-Core rev: abc6b3180b87c665ff04204b7163d1f074d99747)

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2025-25473.patch

@@ -0,0 +1,36 @@
+From c08d300481b8ebb846cd43a473988fdbc6793d1b Mon Sep 17 00:00:00 2001
+From: James Almer <jamrial@gmail.com>
+Date: Fri, 17 Jan 2025 00:05:31 -0300
+Subject: [PATCH] avformat/avformat: also clear FFFormatContext packet queue
+ when closing a muxer
+
+packet_buffer is used in mux.c, and if a muxing process fails at a point where
+packets remained in said queue, they will leak.
+
+Fixes ticket #11419
+
+Signed-off-by: James Almer <jamrial@gmail.com>
+
+CVE: CVE-2025-25473
+
+Upstream-Status: Backport [https://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff/c08d300481b8ebb846cd43a473988fdbc6793d1b]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ libavformat/avformat.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libavformat/avformat.c b/libavformat/avformat.c
+index 5b8bb78..73f31cd 100644
+--- a/libavformat/avformat.c
++++ b/libavformat/avformat.c
+@@ -138,6 +138,7 @@ void avformat_free_context(AVFormatContext *s)
+     av_dict_free(&si->id3v2_meta);
+     av_packet_free(&si->pkt);
+     av_packet_free(&si->parse_pkt);
++    avpriv_packet_list_free(&si->packet_buffer);
+     av_freep(&s->streams);
+     ff_flush_packet_queue(s);
+     av_freep(&s->url);
+--
+2.40.0

meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb

@@ -47,6 +47,7 @@ SRC_URI = " \
     file://CVE-2024-36618.patch \
     file://CVE-2024-36619.patch \
     file://CVE-2024-35369.patch \
+    file://CVE-2025-25473.patch \
 "
 
 SRC_URI[sha256sum] = "8684f4b00f94b85461884c3719382f1261f0d9eb3d59640a1f4ac0873616f968"