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Fix heap-buffer-overflow bugs identified by the Address Sanitizer

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Differential Revision: http://reviews.llvm.org/D7733

llvm-svn: 229912
This commit is contained in:
Greg Fitzgerald
2015-02-19 20:42:23 +00:00
parent 68ca67b212
commit cdaea4db26
2 changed files with 5 additions and 0 deletions
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2
lld/lib/ReaderWriter/MachO/ArchHandler.cpp
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@@ -142,6 +142,8 @@ uint32_t ArchHandler::readU32(const uint8_t *addr, bool isBig) {
bool ArchHandler::isDwarfCIE(bool isBig, const DefinedAtom *atom) {
assert(atom->contentType() == DefinedAtom::typeCFI);
if (atom->rawContent().size() < sizeof(uint32_t))
return false;
uint32_t size = read32(atom->rawContent().data(), isBig);
uint32_t idOffset = sizeof(uint32_t);

3
lld/lib/ReaderWriter/MachO/CompactUnwindPass.cpp
View File

@@ -411,6 +411,9 @@ private:
}
}
if (atom->rawContent().size() < 4 * sizeof(uint32_t))
return entry;
using normalized::read32;
entry.rangeLength =
read32(atom->rawContent().data() + 2 * sizeof(uint32_t), _isBig);