CVE-2021-32810

    Dashboard / Vulnerabilities / CVE-2021-32810

    CVE-2021-32810

    Published: 2 Aug 2021Last Modified: 8 Jul 2026

    Summary:

    Details: crossbeam-deque is a package of work-stealing deques for building task schedulers when programming in Rust. In versions prior to 0.7.4 and 0.8.0, 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. This has been fixed in crossbeam-deque 0.8.1 and 0.7.4.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EZILHZDRGDPOBQ4KTW3E5PPMKLHGH5N/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWHNNBJCU4EHA2X5ZAMJMGLDUYS5FEPP/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYBSLIYFANZLCYWOGTIYZUM26TJRH7WU/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CY5T3FCE4MUYSPKEWICLVJBBODGJ6SZE/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EW5B2VTDVMJ6B3DA4VLMAMW2GGDCE2BK/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIBFGBSL3JSVJQTNEDEIMZGZF23N2KE/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCLMH7B7B2MF55ET4NQNPH7JWISFX4RT/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRPKBRXCRNGNMVFQPFD4LM3QKPEMBQQR/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUBWBYCPSSXTJGEAQ67CJUNQJBOCM26/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3LSN3B43TJSFIOB3QLPBI3RCHRU5BLO/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VQZIEJQBV3S72BHD5GKJQF3NVYNRV5CF/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WGB2H35CTZDHOV3VLC5BM6VFGURLLVRP/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFBZWCLG7AGLJO4A7K5IMJVPLSWZ5TJP/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQDIBB7VR3ER52FMSMNJPAWNDO5SITCE/, https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-pqqp-xmhj-wgcw

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -048513769238eda1876bcc61b131b2ece32f87dd

    Affected versions

    crossbeam-channel-0.4.4
    crossbeam-channel-0.4.2
    crossbeam-channel-0.4.0

    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
    CVE-2021-32810 | CVE-DB