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: 599ee3f195bc66d57797c121fa0b73a901d6edfa)

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://github.com/ffmpeg/ffmpeg/commit/c08d300481b8ebb846cd43a473988fdbc6793d1b]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ libavformat/utils.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libavformat/utils.c b/libavformat/utils.c
+index cee86ae..fe458dd 100644
+--- a/libavformat/utils.c
++++ b/libavformat/utils.c
+@@ -724,6 +724,7 @@ 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_5.0.1.bb

@@ -50,6 +50,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \
            file://CVE-2024-36618.patch \
            file://CVE-2024-28661.patch \
            file://CVE-2024-35369.patch \
+           file://CVE-2025-25473.patch \
           "
 
 SRC_URI[sha256sum] = "ef2efae259ce80a240de48ec85ecb062cecca26e4352ffb3fda562c21a93007b"