ffmpeg: fix CVE-2024-31582

FFmpeg version n6.1 was discovered to contain a heap buffer overflow vulnerability
in the draw_block_rectangle function of libavfilter/vf_codecview.c. This vulnerability
allows attackers to cause undefined behavior or a Denial of Service (DoS) via crafted input.

(From OE-Core rev: d675ceadf5844524e9f77c2c9b76b9ca42e699fc)

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

meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-31582.patch

@@ -0,0 +1,34 @@
+From 99debe5f823f45a482e1dc08de35879aa9c74bd2 Mon Sep 17 00:00:00 2001
+From: Zhao Zhili <zhilizhao@tencent.com>
+Date: Fri, 29 Dec 2023 05:56:43 +0800
+Subject: [PATCH 4/5] avfilter/vf_codecview: fix heap buffer overflow
+
+And improve the performance by a little bit.
+
+Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
+
+CVE: CVE-2024-31582
+
+Upstream-Status: Backport [https://github.com/ffmpeg/ffmpeg/commit/99debe5f823f45a482e1dc08de35879aa9c74bd2]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ libavfilter/vf_codecview.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/libavfilter/vf_codecview.c b/libavfilter/vf_codecview.c
+index aac038e..816d633 100644
+--- a/libavfilter/vf_codecview.c
++++ b/libavfilter/vf_codecview.c
+@@ -215,9 +215,6 @@ static void draw_block_rectangle(uint8_t *buf, int sx, int sy, int w, int h, int
+         buf[sx + w - 1] = color;
+         buf += stride;
+     }
+-
+-    for (int x = sx; x < sx + w; x++)
+-        buf[x] = color;
+ }
+
+ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
+--
+2.40.0

meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.1.bb

@@ -32,6 +32,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \
            file://CVE-2024-32230.patch \
            file://CVE-2023-51793.patch \
            file://CVE-2023-50008.patch \
+           file://CVE-2024-31582.patch \
           "
 
 SRC_URI[sha256sum] = "ef2efae259ce80a240de48ec85ecb062cecca26e4352ffb3fda562c21a93007b"