RUSTSEC-2021-0093

    Dashboard / Vulnerabilities / RUSTSEC-2021-0093

    RUSTSEC-2021-0093

    Published: 30 Jul 2021Last Modified: 17 Jul 2026

    Summary: Data race in crossbeam-deque

    Details: In the affected version of this crate, the result of the race condition is that one or more tasks in the worker queue can be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this can cause double free and a memory leak. If not, this still can cause a logical bug. Crates using `Stealer::steal`, `Stealer::steal_batch`, or `Stealer::steal_batch_and_pop` are affected by this issue. Credits to [@kmaork](https://github.com/kmaork) for discovering, reporting and fixing the bug.

    References: https://crates.io/crates/crossbeam-deque, https://rustsec.org/advisories/RUSTSEC-2021-0093.html, https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-pqqp-xmhj-wgcw

    Affected packages

    Package

    Name: crossbeam-deque

    Purl: pkg:cargo/crossbeam-deque

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.7.4

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    RUSTSEC-2021-0093 | CVE-DB