fix CVE-2022-1475

(cherry picked from commit 95ec0b8c9642bde6f5ecba0d632d9b69035f838a)

CVE-2022-1475.patch

@@ -0,0 +1,29 @@
+From d4dbe14f2559639656e998c0ad4982cc2a53196a Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michael@niedermayer.cc>	
+Date: Fri, 12 Jul 2024 16:14:34 +0800
+Subject: [PATCH] g729_parser:Check channels
+
+Reference:https://git.videolan.org/?p=ffmpeg.git;a=commit;h=757da974b21833529cc41bdcc9684c29660cdfa8
+
+---
+ libavcodec/g729_parser.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/libavcodec/g729_parser.c b/libavcodec/g729_parser.c
+index fc00235..6b63f46 100644
+--- a/libavcodec/g729_parser.c
++++ b/libavcodec/g729_parser.c
+@@ -48,6 +48,10 @@ static int g729_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
+         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;
+     }
+-- 
+2.27.0
+

ffmpeg.spec

@@ -60,7 +60,7 @@
 Summary:        Digital VCR and streaming server
 Name:           ffmpeg%{?flavor}
 Version:        4.2.4
-Release:        15
+Release:        16
 License:        %{ffmpeg_license}
 URL:            http://ffmpeg.org/
 %if 0%{?date}
@@ -84,7 +84,7 @@ Patch12:        fix-CVE-2023-50010.patch
 Patch13:        CVE-2021-38171.patch
 Patch14:        CVE-2021-28429.patch
 Patch15:        fix-CVE-2024-32230.patch  
-
+Patch16:        CVE-2022-1475.patch
 
 Requires:       %{name}-libs%{?_isa} = %{version}-%{release}
 %{?_with_cuda:BuildRequires: cuda-minimal-build-%{_cuda_version_rpm} cuda-drivers-devel}
@@ -418,6 +418,9 @@ install -pm755 tools/qt-faststart %{buildroot}%{_bindir}
 
 
 %changelog
+* Fri Jul 12 2024 happyworker <208suo@208suo.com> - 4.2.4-16
+- Fix CVE-2022-1475
+
 * Wed Jul  10 2024 happyworker <208suo@208suo.com> - 4.2.4-15
 - Fix CVE-2024-32230