ffmpeg: fix CVE-2024-36617

FFmpeg n6.1.1 has an integer overflow vulnerability in the FFmpeg CAF decoder.

(From OE-Core rev: 8057ba630477a7aeedf057b7e1ce25ab0c445665)

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

meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-36617.patch

@@ -0,0 +1,36 @@
+From d973fcbcc2f944752ff10e6a76b0b2d9329937a7 Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michael@niedermayer.cc>
+Date: Sat, 30 Sep 2023 00:38:17 +0200
+Subject: [PATCH] avformat/cafdec: dont seek beyond 64bit
+
+Fixes: signed integer overflow: 64 + 9223372036854775807 cannot be represented in type 'long long'
+Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6418242730328064
+Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6418242730328064
+
+Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
+Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
+
+CVE: CVE-2024-36617
+
+Upstream-Status: Backport [https://github.com/ffmpeg/ffmpeg/commit/d973fcbcc2f944752ff10e6a76b0b2d9329937a7]
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ libavformat/cafdec.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c
+index f5ba0f4..e92e327 100644
+--- a/libavformat/cafdec.c
++++ b/libavformat/cafdec.c
+@@ -271,7 +271,7 @@ static int read_pakt_chunk(AVFormatContext *s, int64_t size)
+         }
+     }
+
+-    if (avio_tell(pb) - ccount > size) {
++    if (avio_tell(pb) - ccount > size || size > INT64_MAX - ccount) {
+         av_log(s, AV_LOG_ERROR, "error reading packet table\n");
+         return AVERROR_INVALIDDATA;
+     }
+--
+2.40.0

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

@@ -43,6 +43,7 @@ SRC_URI = " \
     file://CVE-2024-35365.patch \
     file://CVE-2024-36613.patch \
     file://CVE-2024-36616.patch \
+    file://CVE-2024-36617.patch \
 "
 
 SRC_URI[sha256sum] = "8684f4b00f94b85461884c3719382f1261f0d9eb3d59640a1f4ac0873616f968"