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Check Mach_fat_arch.align

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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65558
https://github.com/upx/upx/issues/765
	modified:   p_mach.cpp
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John Reiser 2024-01-10 15:31:37 -08:00 committed by Markus F.X.J. Oberhumer
parent 28f26da6ab
commit b87f60a917
1 changed files with 5 additions and 0 deletions
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5
src/p_mach.cpp
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@ -2267,6 +2267,11 @@ unsigned PackMachFat::check_fat_head()
} }
for (unsigned j=0; j < nfat; ++j) { for (unsigned j=0; j < nfat; ++j) {
unsigned const align = arch[j].align; unsigned const align = arch[j].align;
if (24 < align) {
char msg[80]; snprintf(msg, sizeof(msg),
"bad fat_arch alignment 0x%x > 24", align);
throwCantPack(msg);
}
unsigned const mask = ~(~0u<<align); unsigned const mask = ~(~0u<<align);
unsigned const size = arch[j].size; unsigned const size = arch[j].size;
unsigned const offset = arch[j].offset; unsigned const offset = arch[j].offset;