ffmpeg: Fix for CVE-2022-1475

Add patch to fix CVE-2022-1475

(From OE-Core rev: 2a97ba89f236b751b333622fbbc14180e9b72245)

Signed-off-by: Virendra Thakur <virendra.thakur@kpit.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 37 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2022-1475.patch b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2022-1475.patch
new file mode 100644
index 0000000000..bd8a08a216
--- /dev/null
+++ b/meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2022-1475.patch
@@ -0,0 +1,36 @@
+From: Michael Niedermayer <michael@niedermayer.cc>
+Date: Sun, 27 Feb 2022 14:43:04 +0100
+Subject: [PATCH] avcodec/g729_parser: Check channels
+
+Fixes: signed integer overflow: 10 * 808464428 cannot be represented in type 'int'
+Fixes: assertion failure
+Fixes: ticket9651
+
+Reviewed-by: Paul B Mahol <onemda@gmail.com>
+Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
+(cherry picked from commit 757da974b21833529cc41bdcc9684c29660cdfa8)
+Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
+
+CVE: CVE-2022-1475
+Upstream-Status: Backport [https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=e9e2ddbc6c78cc18b76093617f82c920e58a8d1f]
+Comment: Patch is refreshed as per ffmpeg codebase
+Signed-off-by: Virendra Thakur <virendra.thakur@kpit.com>
+
+---
+ libavcodec/g729_parser.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+Index: ffmpeg-4.2.2/libavcodec/g729_parser.c
+===================================================================
+--- a/libavcodec/g729_parser.c
++++ b/libavcodec/g729_parser.c
+@@ -48,6 +48,9 @@ static int g729_parse(AVCodecParserConte
+         av_assert1(avctx->codec_id == AV_CODEC_ID_G729);
+         /* FIXME: replace this heuristic block_size with more precise estimate */
+         s->block_size = (avctx->bit_rate < 8000) ? G729D_6K4_BLOCK_SIZE : G729_8K_BLOCK_SIZE;
++        // channels > 2 is invalid, we pass the packet on unchanged
++        if (avctx->channels > 2)
++            s->block_size = 0;
+         s->block_size *= avctx->channels;
+         s->duration   = avctx->frame_size;
+     }
diff --git a/meta/recipes-multimedia/ffmpeg/ffmpeg_4.2.2.bb b/meta/recipes-multimedia/ffmpeg/ffmpeg_4.2.2.bb
index 1d6f2e528b..cbfdbf0563 100644
--- a/meta/recipes-multimedia/ffmpeg/ffmpeg_4.2.2.bb
+++ b/meta/recipes-multimedia/ffmpeg/ffmpeg_4.2.2.bb
@@ -29,6 +29,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \
            file://0001-libavutil-include-assembly-with-full-path-from-sourc.patch \
            file://CVE-2021-3566.patch \
            file://CVE-2021-38291.patch \
+           file://CVE-2022-1475.patch \
           "
 SRC_URI[md5sum] = "348956fc2faa57a2f79bbb84ded9fbc3"
 SRC_URI[sha256sum] = "cb754255ab0ee2ea5f66f8850e1bd6ad5cac1cd855d0a2f4990fb8c668b0d29c"