CVE-2021-30456: Double-free in id-map

August 25, 2021 (updated June 13, 2023)

A double free can occur in get_or_insert upon a panic of a user-provided f function. get_or_insert reserves space for a value, before calling the user provided insertion function f. If the function f panics then uninitialized or previously freed memory can be dropped.

References

github.com/advisories/GHSA-vfqx-hv88-f9cv
github.com/andrewhickman/id-map
github.com/andrewhickman/id-map/issues/3
nvd.nist.gov/vuln/detail/CVE-2021-30456
rustsec.org/advisories/RUSTSEC-2021-0052.html

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