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Fix workspace overflow for (*ACCEPT) with deeply nested parentheses

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Petr Písař 2016-02-11 09:33:11 +01:00
parent f5072ba0f9
commit fc9ba26bc7
2 changed files with 158 additions and 0 deletions
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152
pcre2-10.21-Fix-workspace-overflow-for-deep-nested-parentheses-w.patch Normal file
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@ -0,0 +1,152 @@
From a7d81bb826ca2aa2c46e3297112589cccab359b3 Mon Sep 17 00:00:00 2001
From: ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069>
Date: Wed, 10 Feb 2016 18:24:02 +0000
Subject: [PATCH] Fix workspace overflow for deep nested parentheses with
(*ACCEPT).
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@489 6239d852-aaf2-0410-a92c-79f79f948069
Petr Písař: Ported to 10.21.
diff --git a/src/pcre2_compile.c b/src/pcre2_compile.c
index e33d620..887fbfd 100644
--- a/src/pcre2_compile.c
+++ b/src/pcre2_compile.c
@@ -5901,10 +5901,22 @@ for (;; ptr++)
goto FAILED;
}
cb->had_accept = TRUE;
+
+ /* In the first pass, just accumulate the length required;
+ otherwise hitting (*ACCEPT) inside many nested parentheses can
+ cause workspace overflow. */
+
for (oc = cb->open_caps; oc != NULL; oc = oc->next)
{
- *code++ = OP_CLOSE;
- PUT2INC(code, 0, oc->number);
+ if (lengthptr != NULL)
+ {
+ *lengthptr += CU2BYTES(1) + IMM2_SIZE;
+ }
+ else
+ {
+ *code++ = OP_CLOSE;
+ PUT2INC(code, 0, oc->number);
+ }
}
setverb = *code++ =
(cb->assert_depth > 0)? OP_ASSERT_ACCEPT : OP_ACCEPT;
diff --git a/testdata/testinput8 b/testdata/testinput8
index ca3b1b9..7e2a1f0 100644
--- a/testdata/testinput8
+++ b/testdata/testinput8
@@ -182,4 +182,6 @@
/((?1)(?2)(?3)(?4)(?5)(?6)(?7)(?8)(?9)(?9)(?8)(?7)(?6)(?5)(?4)(?3)(?2)(?1)(?0)){2,}()()()()()()()()()/debug
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+
# End of testinput8
diff --git a/testdata/testoutput8-16-2 b/testdata/testoutput8-16-2
index 05669bb..a5e8dec 100644
--- a/testdata/testoutput8-16-2
+++ b/testdata/testoutput8-16-2
@@ -1027,4 +1027,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 186 at offset 490: regular expression is too complicated
+
# End of testinput8
diff --git a/testdata/testoutput8-16-3 b/testdata/testoutput8-16-3
index 31884e1..36133b3 100644
--- a/testdata/testoutput8-16-3
+++ b/testdata/testoutput8-16-3
@@ -1023,4 +1023,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
diff --git a/testdata/testoutput8-32-2 b/testdata/testoutput8-32-2
index babd0c7..99c4fad 100644
--- a/testdata/testoutput8-32-2
+++ b/testdata/testoutput8-32-2
@@ -1023,4 +1023,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
diff --git a/testdata/testoutput8-32-3 b/testdata/testoutput8-32-3
index babd0c7..99c4fad 100644
--- a/testdata/testoutput8-32-3
+++ b/testdata/testoutput8-32-3
@@ -1023,4 +1023,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
diff --git a/testdata/testoutput8-32-4 b/testdata/testoutput8-32-4
index babd0c7..99c4fad 100644
--- a/testdata/testoutput8-32-4
+++ b/testdata/testoutput8-32-4
@@ -1023,4 +1023,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
diff --git a/testdata/testoutput8-8-2 b/testdata/testoutput8-8-2
index 6a9aa0a..6dc1f42 100644
--- a/testdata/testoutput8-8-2
+++ b/testdata/testoutput8-8-2
@@ -1026,4 +1026,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
diff --git a/testdata/testoutput8-8-3 b/testdata/testoutput8-8-3
index 2fe1168..ae14946 100644
--- a/testdata/testoutput8-8-3
+++ b/testdata/testoutput8-8-3
@@ -1024,4 +1024,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
diff --git a/testdata/testoutput8-8-4 b/testdata/testoutput8-8-4
index 91993b2..6c79956 100644
--- a/testdata/testoutput8-8-4
+++ b/testdata/testoutput8-8-4
@@ -1022,4 +1022,7 @@ Capturing subpattern count = 10
May match empty string
Subject length lower bound = 0
+/([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00]([00](*ACCEPT)/
+Failed: error 114 at offset 509: missing closing parenthesis
+
# End of testinput8
--
2.5.0

6
pcre2.spec
View File

@ -25,6 +25,9 @@ Patch1: pcre2-10.21-Detect-unmatched-closing-parentheses-in-the-pre-scan.pat
# Fix pcre2test for expressions with a callout inside a look-behind assertion, # Fix pcre2test for expressions with a callout inside a look-behind assertion,
# upstream bug #1783, fixed in upstream after 10.21 # upstream bug #1783, fixed in upstream after 10.21
Patch2: pcre2-10.21-Fix-pcre2test-loop-when-a-callout-is-in-an-initial-l.patch Patch2: pcre2-10.21-Fix-pcre2test-loop-when-a-callout-is-in-an-initial-l.patch
# Fix workspace overflow for (*ACCEPT) with deeply nested parentheses,
# upstream bug #1791, fixed in upstream after 10.21
Patch3: pcre2-10.21-Fix-workspace-overflow-for-deep-nested-parentheses-w.patch
# New libtool to get rid of RPATH and to use distribution autotools # New libtool to get rid of RPATH and to use distribution autotools
BuildRequires: autoconf BuildRequires: autoconf
@ -87,6 +90,7 @@ Utilities demonstrating PCRE2 capabilities like pcre2grep or pcre2test.
%patch0 -p1 %patch0 -p1
%patch1 -p1 %patch1 -p1
%patch2 -p1 %patch2 -p1
%patch3 -p1
# Because of multilib patch # Because of multilib patch
libtoolize --copy --force libtoolize --copy --force
autoreconf -vif autoreconf -vif
@ -170,6 +174,8 @@ make %{?_smp_mflags} check VERBOSE=yes
- Report unmatched closing parantheses properly - Report unmatched closing parantheses properly
- Fix pcre2test for expressions with a callout inside a look-behind assertion - Fix pcre2test for expressions with a callout inside a look-behind assertion
(upstream bug #1783) (upstream bug #1783)
- Fix workspace overflow for (*ACCEPT) with deeply nested parentheses
(upstream bug #1791)
* Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 10.21-1.1 * Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 10.21-1.1
- Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild