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Henrik RydgårdandClaude Sonnet 5
1eab737e4d
DoVector already rejects an attacker/corruption-controlled size that would resize far beyond what's actually left in the savestate buffer. DoList/DoDeque/DoMap/DoMultimap/DoSet never got the same treatment - a corrupted count field (e.g. 0xFFFFFFFF) drove an immediate huge resize (list/deque) or an unbounded loop of allocations (map/set) before any per-element bounds checking kicked in. All five now check the declared count against PointerWrap::Remaining() first. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01L4QAoxV2KY7ek4PcZw3WvY
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#pragma once
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// Templates for save state serialization. See Serializer.h.
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#include <deque>
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#include "Common/Serialize/SerializeFuncs.h"
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template<class T>
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void DoDeque(PointerWrap &p, std::deque<T> &x, T &default_val) {
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u32 deq_size = (u32)x.size();
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Do(p, deq_size);
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// Guard against an attacker-controlled size driving a huge resize, same as DoVector.
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if (p.mode == PointerWrap::MODE_READ || p.mode == PointerWrap::MODE_VERIFY) {
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if (deq_size > p.Remaining() / sizeof(T)) {
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p.SetError(PointerWrap::ERROR_FAILURE);
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return;
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}
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}
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x.resize(deq_size, default_val);
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u32 i;
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for (i = 0; i < deq_size; i++)
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Do(p, x[i]);
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}
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template<class T>
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void Do(PointerWrap &p, std::deque<T *> &x) {
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T *dv = nullptr;
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DoDeque(p, x, dv);
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}
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template<class T>
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void Do(PointerWrap &p, std::deque<T> &x) {
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T dv = T();
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DoDeque(p, x, dv);
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}
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