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Achievements: Fix potential uninitialized data read

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Stenzek 2024-07-14 21:20:56 +10:00
parent 8698298499
commit 500fbe5ef1
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1 changed files with 3 additions and 3 deletions
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6
src/core/achievements.cpp
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@ -275,7 +275,7 @@ std::string Achievements::GetGameHash(CDImage* image)
if (!System::ReadExecutableFromImage(image, &executable_name, &executable_data)) if (!System::ReadExecutableFromImage(image, &executable_name, &executable_data))
return {}; return {};
BIOS::PSEXEHeader header; BIOS::PSEXEHeader header = {};
if (executable_data.size() >= sizeof(header)) if (executable_data.size() >= sizeof(header))
std::memcpy(&header, executable_data.data(), sizeof(header)); std::memcpy(&header, executable_data.data(), sizeof(header));
if (!BIOS::IsValidPSExeHeader(header, static_cast<u32>(executable_data.size()))) if (!BIOS::IsValidPSExeHeader(header, static_cast<u32>(executable_data.size())))
@ -286,8 +286,8 @@ std::string Achievements::GetGameHash(CDImage* image)
// See rcheevos hash.c - rc_hash_psx(). // See rcheevos hash.c - rc_hash_psx().
const u32 MAX_HASH_SIZE = 64 * 1024 * 1024; const u32 MAX_HASH_SIZE = 64 * 1024 * 1024;
const u32 hash_size = std::min<u32>(sizeof(header) + header.file_size, MAX_HASH_SIZE); const u32 hash_size =
Assert(hash_size <= executable_data.size()); std::min(std::min<u32>(sizeof(header) + header.file_size, MAX_HASH_SIZE), static_cast<u32>(executable_data.size()));
MD5Digest digest; MD5Digest digest;
digest.Update(executable_name.c_str(), static_cast<u32>(executable_name.size())); digest.Update(executable_name.c_str(), static_cast<u32>(executable_name.size()));