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!16 fix CVE-2021-0561

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From: @zhouwenpei 
Reviewed-by: @liqingqing_1229 
Signed-off-by: @liqingqing_1229
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openeuler-ci-bot 2022-03-31 08:12:06 +00:00 committed by Gitee
commit 5ef9e872d2
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GPG Key ID: 173E9B9CA92EEF8F
2 changed files with 31 additions and 1 deletions
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25
CVE-2021-0561.patch Normal file
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@ -0,0 +1,25 @@
From bbcef0eb5b501083b197acb7ad84b3bc82fdc8f2 Mon Sep 17 00:00:00 2001
From: Neelkamal Semwal <neelkamal.semwal@ittiam.com>
Date: Fri, 18 Dec 2020 22:28:36 +0530
Subject: [PATCH] libFlac: Exit at EOS in verify mode
When verify mode is enabled, once decoder flags end of stream, encode processing is considered complete
---
src/libFLAC/stream_encoder.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/libFLAC/stream_encoder.c b/src/libFLAC/stream_encoder.c
index 4c91247fe8..7109802c27 100644
--- a/src/libFLAC/stream_encoder.c
+++ b/src/libFLAC/stream_encoder.c
@@ -2610,7 +2610,9 @@ FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, uint32_t samples, FLAC
encoder->private_->verify.needs_magic_hack = true;
}
else {
- if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
+ if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)
+ || (!is_last_block
+ && (FLAC__stream_encoder_get_verify_decoder_state(encoder) == FLAC__STREAM_DECODER_END_OF_STREAM))) {
FLAC__bitwriter_release_buffer(encoder->private_->frame);
FLAC__bitwriter_clear(encoder->private_->frame);
if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)

7
flac.spec
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@ -2,12 +2,14 @@
Name: flac
Version: 1.3.3
Release: 1
Release: 2
Summary: encoder/decoder which support the Free Lossless Audio Codec
License: BSD and GPLv2+ and GFDL
Source0: http://downloads.xiph.org/releases/flac/flac-%{version}.tar.xz
URL: http://www.xiph.org/flac/
Patch0000: CVE-2021-0561.patch
Provides: %{name}-libs
Obsoletes: %{name}-libs
@ -98,6 +100,9 @@ update-desktop-database &> /dev/null || :
%doc flac-doc-devel/*
%changelog
* Thu Mar 31 2022 zhouwenpei <zhouwenpei1@huawei.com> - 1.3.3-2
- fix CVE-2021-0561
* Fri Apr 24 2020 lihongjiang <lihongjiang6@huawei.com> - 1.3.3-1
- update version to 1.3.3