GHSA-9c9f-7x9p-4wqp
Suggest an improvement- Source
- https://github.com/advisories/GHSA-9c9f-7x9p-4wqp
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/06/GHSA-9c9f-7x9p-4wqp/GHSA-9c9f-7x9p-4wqp.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-9c9f-7x9p-4wqp
- Aliases
- Published
- 2022-06-17T00:16:11Z
- Modified
- 2023-11-08T04:17:51.156433Z
- 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 marker types to be covariant, a malicious coder can cheat the singleton check in
TCellOwnerandTLCellOwner, giving unsound access to cell memory. This could take the form of getting two mutable references to the same memory, or a mutable reference and an immutable reference.The fix is for the crate to internally force the marker type to be invariant. This blocks the conversion between covariant types which Rust normally allows.
- Database specific
{ "nvd_published_at": null, "cwe_ids": [], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2022-06-17T00:16:11Z" }- References
Affected packages
crates.io / qcell
Package
- Name
- qcell
- View open source insights on deps.dev
- Purl
- pkg:cargo/qcell