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1.4 KiB
JSON
1 line
1.4 KiB
JSON
{"schema_version":"1.7.3","id":"RUSTSEC-2022-0007","published":"2022-01-24T12:00:00Z","modified":"2023-11-08T04:17:51.156433Z","aliases":["GHSA-9c9f-7x9p-4wqp"],"summary":"A malicious coder can get unsound access to TCell or TLCell memory","details":"This is impossible to do by accident, but by carefully constructing\nmarker types to be covariant, a malicious coder can cheat the\nsingleton check in `TCellOwner` and `TLCellOwner`, giving unsound\naccess to cell memory. This could take the form of getting two\nmutable references to the same memory, or a mutable reference and an\nimmutable reference.\n\nThe fix is for the crate to internally force the marker type to be\ninvariant. This blocks the conversion between covariant types which\nRust normally allows.","affected":[{"package":{"name":"qcell","ecosystem":"crates.io","purl":"pkg:cargo/qcell"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.4.3"}]}],"ecosystem_specific":{"affected_functions":null,"affects":{"arch":[],"functions":[],"os":[]}},"database_specific":{"categories":[],"cvss":null,"informational":"unsound","source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2022-0007.json"}}],"references":[{"type":"PACKAGE","url":"https://crates.io/crates/qcell"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2022-0007.html"},{"type":"REPORT","url":"https://github.com/uazu/qcell/issues/20"}],"database_specific":{"license":"CC0-1.0"}} |