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ffmpeg: Fix CVE-2018-15822

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Fixes: Assertion failure
Fixes: assert_flvenc.c:941_1.swf

(From OE-Core rev: 23393330a599403085437cb62169bb3a2375c07a)

Signed-off-by: Mingli Yu <Mingli.Yu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Mingli Yu
2018-09-06 17:33:28 +08:00
committed by Richard Purdie
parent 688611a5ed
commit 8f8a10e05e
2 changed files with 38 additions and 0 deletions
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37
meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2018-15822.patch Normal file
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@@ -0,0 +1,37 @@
From 6b67d7f05918f7a1ee8fc6ff21355d7e8736aa10 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 28 Jul 2018 15:03:50 +0200
Subject: [PATCH] avformat/flvenc: Check audio packet size
Fixes: Assertion failure
Fixes: assert_flvenc.c:941_1.swf
Upstream-Status: Backport [https://github.com/FFmpeg/FFmpeg/commit/6b67d7f05918f7a1ee8fc6ff21355d7e8736aa10]
CVE: CVE-2018-15822
Found-by: #CHEN HONGXU# <HCHEN017@e.ntu.edu.sg>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Mingli Yu <Mingli.Yu@windriver.com>
---
libavformat/flvenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 1c552a3e6b..e4863f1fc7 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -883,6 +883,11 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
int flags = -1, flags_size, ret;
int64_t cur_offset = avio_tell(pb);
+ if (par->codec_type == AVMEDIA_TYPE_AUDIO && !pkt->size) {
+ av_log(s, AV_LOG_WARNING, "Empty audio Packet\n");
+ return AVERROR(EINVAL);
+ }
+
if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A ||
par->codec_id == AV_CODEC_ID_VP6 || par->codec_id == AV_CODEC_ID_AAC)
flags_size = 2;
--
2.17.1

1
meta/recipes-multimedia/ffmpeg/ffmpeg_4.0.2.bb
View File

@@ -25,6 +25,7 @@ LIC_FILES_CHKSUM = "file://COPYING.GPLv2;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \
file://mips64_cpu_detection.patch \
file://CVE-2018-15822.patch \
"
SRC_URI[md5sum] = "ae0bfdf809306a212b4f0e6eb8d1c75e"
SRC_URI[sha256sum] = "a95c0cc9eb990e94031d2183f2e6e444cc61c99f6f182d1575c433d62afb2f97"