GHSA-v5m7-53cv-f3hx

Dashboard / Vulnerabilities / GHSA-v5m7-53cv-f3hx

GHSA-v5m7-53cv-f3hx

Summary: crossbeam-channel Undefined Behavior before v0.4.4

Details: ### Impact The affected version of this crate's the `bounded` channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. ### Patches This has been fixed in crossbeam-channel 0.4.4. We recommend users to upgrade to 0.4.4. ### References See https://github.com/crossbeam-rs/crossbeam/pull/533, https://github.com/crossbeam-rs/crossbeam/issues/539, and https://github.com/RustSec/advisory-db/pull/425 for more details. ### License This advisory is in the public domain.

References: https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx, https://nvd.nist.gov/vuln/detail/CVE-2020-15254, https://github.com/crossbeam-rs/crossbeam/issues/539, https://github.com/RustSec/advisory-db/pull/425, https://github.com/crossbeam-rs/crossbeam/pull/533, https://github.com/crossbeam-rs/crossbeam, https://rustsec.org/advisories/RUSTSEC-2020-0052.html