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- add CVE-2023-39070.patch (CVE-2023-39070, bsc#1215233)

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OBS-URL: https://build.opensuse.org/package/show/devel:tools/cppcheck?expand=0&rev=120
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Dirk Mueller 2023-12-20 23:14:38 +00:00 committed by Git OBS Bridge
parent 382bc55288
commit f2ba187ef3
3 changed files with 128 additions and 0 deletions
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CVE-2023-39070.patch Normal file
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@ -0,0 +1,122 @@
From 76695f6be2685a1ee7436e563bc550eab506952a Mon Sep 17 00:00:00 2001
From: Dirk Mueller <dmueller@suse.com>
Date: Tue, 19 Dec 2023 20:44:22 +0100
Subject: [PATCH] Fix #12272 (removeContradiction() Avoid use-after-free on
multiple remove) (#5707)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
As reported in
https://sourceforge.net/p/cppcheck/discussion/general/thread/fa43fb8ab1/
removeContradiction() minValue/maxValue.remove(..) can access free'd
memory as it removes all matching values by iterating over the complete
list. Creating a full copy instead of a reference avoids this issue.
Signed-off-by: Dirk Müller <dirk@dmllr.de>
---
lib/preprocessor.cpp | 16 +++++++-----
lib/token.cpp | 60 +++++++++++++++++++++++---------------------
2 files changed, 42 insertions(+), 34 deletions(-)
Index: cppcheck-2.12.1/lib/token.cpp
===================================================================
--- cppcheck-2.12.1.orig/lib/token.cpp
+++ cppcheck-2.12.1/lib/token.cpp
@@ -1955,64 +1955,68 @@ static bool isAdjacent(const ValueFlow::
return std::abs(x.intvalue - y.intvalue) == 1;
}
-static bool removePointValue(std::list<ValueFlow::Value>& values, ValueFlow::Value& x)
+static bool removePointValue(std::list<ValueFlow::Value>& values, std::list<ValueFlow::Value>::iterator& x)
{
- const bool isPoint = x.bound == ValueFlow::Value::Bound::Point;
+ const bool isPoint = x->bound == ValueFlow::Value::Bound::Point;
if (!isPoint)
- x.decreaseRange();
+ x->decreaseRange();
else
- values.remove(x);
+ x = values.erase(x);
return isPoint;
}
static bool removeContradiction(std::list<ValueFlow::Value>& values)
{
bool result = false;
- for (ValueFlow::Value& x : values) {
- if (x.isNonValue())
+ for (auto itx = values.begin(); itx != values.end(); ++itx) {
+ if (itx->isNonValue())
continue;
- for (ValueFlow::Value& y : values) {
- if (y.isNonValue())
+
+ auto ity = itx;
+ ++ity;
+ for (; ity != values.end(); ++ity) {
+ if (ity->isNonValue())
continue;
- if (x == y)
+ if (*itx == *ity)
continue;
- if (x.valueType != y.valueType)
+ if (itx->valueType != ity->valueType)
continue;
- if (x.isImpossible() == y.isImpossible())
+ if (itx->isImpossible() == ity->isImpossible())
continue;
- if (x.isSymbolicValue() && !ValueFlow::Value::sameToken(x.tokvalue, y.tokvalue))
+ if (itx->isSymbolicValue() && !ValueFlow::Value::sameToken(itx->tokvalue, ity->tokvalue))
continue;
- if (!x.equalValue(y)) {
- auto compare = [](const ValueFlow::Value& x, const ValueFlow::Value& y) {
- return x.compareValue(y, less{});
+ if (!itx->equalValue(*ity)) {
+ auto compare = [](const std::list<ValueFlow::Value>::const_iterator& x, const std::list<ValueFlow::Value>::const_iterator& y) {
+ return x->compareValue(*y, less{});
};
- const ValueFlow::Value& maxValue = std::max(x, y, compare);
- const ValueFlow::Value& minValue = std::min(x, y, compare);
+ auto itMax = std::max(itx, ity, compare);
+ auto itMin = std::min(itx, ity, compare);
// TODO: Adjust non-points instead of removing them
- if (maxValue.isImpossible() && maxValue.bound == ValueFlow::Value::Bound::Upper) {
- values.remove(minValue);
+ if (itMax->isImpossible() && itMax->bound == ValueFlow::Value::Bound::Upper) {
+ values.erase(itMin);
return true;
}
- if (minValue.isImpossible() && minValue.bound == ValueFlow::Value::Bound::Lower) {
- values.remove(maxValue);
+ if (itMin->isImpossible() && itMin->bound == ValueFlow::Value::Bound::Lower) {
+ values.erase(itMax);
return true;
}
continue;
}
- const bool removex = !x.isImpossible() || y.isKnown();
- const bool removey = !y.isImpossible() || x.isKnown();
- if (x.bound == y.bound) {
+ const bool removex = !itx->isImpossible() || ity->isKnown();
+ const bool removey = !ity->isImpossible() || itx->isKnown();
+ if (itx->bound == ity->bound) {
if (removex)
- values.remove(x);
+ values.erase(itx);
if (removey)
- values.remove(y);
+ values.erase(ity);
+ // itx and ity are invalidated
return true;
}
result = removex || removey;
bool bail = false;
- if (removex && removePointValue(values, x))
+ if (removex && removePointValue(values, itx))
bail = true;
- if (removey && removePointValue(values, y))
+ if (removey && removePointValue(values, ity))
bail = true;
if (bail)
return true;

5
cppcheck.changes
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@ -1,3 +1,8 @@
-------------------------------------------------------------------
Wed Dec 20 23:14:07 UTC 2023 - Dirk Müller <dmueller@suse.com>
- add CVE-2023-39070.patch (CVE-2023-39070, bsc#1215233)
-------------------------------------------------------------------
Thu Nov 9 10:21:24 UTC 2023 - Guillaume GARDET <guillaume.gardet@opensuse.org>

1
cppcheck.spec
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@ -25,6 +25,7 @@ URL: https://github.com/danmar/cppcheck
Source: https://github.com/danmar/cppcheck/archive/refs/tags/%{version}.tar.gz#/%{name}-%{version}.tar.gz
Patch0: eb076d87.patch
Patch1: werror-return-type.patch
Patch2: CVE-2023-39070.patch
BuildRequires: cmake
BuildRequires: docbook-xsl-stylesheets
BuildRequires: fdupes