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CVE-2022-0629 vim: Stack-based Buffer Overflow in vim prior to 8.2

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Resolves: CVE-2022-0629
This commit is contained in:
Zdenek Dohnal 2022-02-23 15:30:22 +01:00
parent fa96bd974d
commit e2ec7ae719
2 changed files with 56 additions and 1 deletions
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49
0001-patch-8.2.4397-crash-when-using-many-composing-chara.patch Normal file
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@ -0,0 +1,49 @@
From 34f8117dec685ace52cd9e578e2729db278163fc Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Wed, 16 Feb 2022 12:16:19 +0000
Subject: [PATCH] patch 8.2.4397: crash when using many composing characters in
error message
Problem: Crash when using many composing characters in error message.
Solution: Use mb_cptr2char_adv() instead of mb_ptr2char_adv().
---
src/testdir/test_assert.vim | 8 ++++++++
src/testing.c | 2 +-
src/version.c | 2 ++
3 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/testdir/test_assert.vim b/src/testdir/test_assert.vim
index 8987f3f8d..27b2d73fb 100644
--- a/src/testdir/test_assert.vim
+++ b/src/testdir/test_assert.vim
@@ -53,6 +53,14 @@ func Test_assert_equal()
call assert_equal("\b\e\f\n\t\r\\\x01\x7f", 'x')
call assert_match('Expected ''\\b\\e\\f\\n\\t\\r\\\\\\x01\\x7f'' but got ''x''', v:errors[0])
call remove(v:errors, 0)
+
+ " many composing characters are handled properly
+ call setline(1, ' ')
+ norm 100gr݀
+ call assert_equal(1, getline(1))
+ call assert_match("Expected 1 but got '.* occurs 100 times]'", v:errors[0])
+ call remove(v:errors, 0)
+ bwipe!
endfunc
func Test_assert_equal_dict()
diff --git a/src/testing.c b/src/testing.c
index 448c01c1e..48ba14d2c 100644
--- a/src/testing.c
+++ b/src/testing.c
@@ -101,7 +101,7 @@ ga_concat_shorten_esc(garray_T *gap, char_u *str)
{
same_len = 1;
s = p;
- c = mb_ptr2char_adv(&s);
+ c = mb_cptr2char_adv(&s);
clen = s - p;
while (*s != NUL && c == mb_ptr2char(s))
{
--
2.35.1

8
vim.spec
View File

@ -27,7 +27,7 @@ Summary: The VIM editor
URL: http://www.vim.org/
Name: vim
Version: %{baseversion}.%{patchlevel}
Release: 13%{?dist}
Release: 14%{?dist}
License: Vim and MIT
Source0: ftp://ftp.vim.org/pub/vim/unix/vim-%{baseversion}-%{patchlevel}.tar.bz2
Source1: virc
@ -112,6 +112,8 @@ Patch3039: 0001-patch-8.2.4281-using-freed-memory-with-lopen-and-bwi.patch
Patch3040: 0001-patch-8.2.4218-illegal-memory-access-with-bracketed-.patch
# CVE-2022-0572 vim: heap overflow in ex_retab() may lead to crash
Patch3041: 0001-patch-8.2.4359-crash-when-repeatedly-using-retab.patch
# CVE-2022-0629 vim: Stack-based Buffer Overflow in vim prior to 8.2
Patch3042: 0001-patch-8.2.4397-crash-when-using-many-composing-chara.patch
# gcc is no longer in buildroot by default
BuildRequires: gcc
@ -340,6 +342,7 @@ perl -pi -e "s,bin/nawk,bin/awk,g" runtime/tools/mve.awk
%patch3039 -p1 -b .cve0443
%patch3040 -p1 -b .cve0392
%patch3041 -p1 -b .cve0572
%patch3042 -p1 -b .cve0629
%build
cd src
@ -897,6 +900,9 @@ touch %{buildroot}/%{_datadir}/%{name}/vimfiles/doc/tags
%endif
%changelog
* Wed Feb 23 2022 Zdenek Dohnal <zdohnal@redhat.com> - 2:8.2.2637-14
- CVE-2022-0629 vim: Stack-based Buffer Overflow in vim prior to 8.2
* Wed Feb 16 2022 Zdenek Dohnal <zdohnal@redhat.com> - 2:8.2.2637-13
- CVE-2022-0572 vim: heap overflow in ex_retab() may lead to crash