GHSA-g98v-hv3f-hcfr: atty potential unaligned read

June 30, 2023 (updated February 14, 2024)

On windows, atty dereferences a potentially unaligned pointer.

In practice however, the pointer won’t be unaligned unless a custom global allocator is used.

In particular, the System allocator on windows uses HeapAlloc, which guarantees a large enough alignment.

References

github.com/advisories/GHSA-g98v-hv3f-hcfr
github.com/softprops/atty
github.com/softprops/atty/issues/50
github.com/softprops/atty/pull/51
rustsec.org/advisories/RUSTSEC-2021-0145.html

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