Skip to content
Patch Next
Sign inAdd to your agent

← Public intelligence

crates.io package

qcell

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Unratedcrates.ioPublished

    A malicious coder can get unsound access to TCell or TLCell memory

    GHSA-9c9f-7x9p-4wqp

    Affected
    • crates.io qcell < 0.4.3
    Fixed in
    0.4.3· Vendor fix available
    Issue
    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 TCellOwner and TLCellOwner, 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.

    Recommended action: Upgrade to 0.4.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →