RUSTSEC-2024-0357 `MemBio::get_buf` has undefined behavior with empty buffers

Previously, MemBio::getbuf called slice::fromrawparts with a null-pointer, which violates the functions invariants, leading to undefined behavior. In debug builds this would produce an assertion failure. This is now fixed...

GHSA-HVQC-PC78-X9WH Soundness issue in raw-cpuid

VendorInfo::asstring, SoCVendorBrand::asstring, and ExtendedFunctionInfo::processorbrandstring construct byte slices using std::slice::fromrawparts, with data coming from reprRust structs. This is always undefined behavior. This flaw has been fixed in v9.0.0, by making the relevant structs reprC...