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Stay in bounds

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This commit is contained in:
Zak Kurka 2018-10-21 07:48:54 -05:00
parent 1c62bc06cf
commit 05c1816504
1 changed files with 6 additions and 0 deletions
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6
src/core/file_sys/ncch_container.cpp
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@ -557,6 +557,9 @@ void NCCHContainer::ApplyIPS(std::vector<u8>& ips, std::vector<u8>& buffer) {
if (length == 0) { if (length == 0) {
length = ips[cursor + 5] << 8 | ips[cursor + 6]; length = ips[cursor + 5] << 8 | ips[cursor + 6];
if (buffer.size() < offset + length)
return;
for (u32 i = 0; i < length; ++i) for (u32 i = 0; i < length; ++i)
buffer[offset + i] = ips[cursor + 7]; buffer[offset + i] = ips[cursor + 7];
@ -565,6 +568,9 @@ void NCCHContainer::ApplyIPS(std::vector<u8>& ips, std::vector<u8>& buffer) {
continue; continue;
} }
if (buffer.size() < offset + length)
return;
std::memcpy(&buffer[offset], &ips[cursor + 5], length); std::memcpy(&buffer[offset], &ips[cursor + 5], length);
cursor += length + 5; cursor += length + 5;
} }