GHSA-r93v-9p5q-vhpf

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    GHSA-r93v-9p5q-vhpf

    Published: 24 May 2022Last Modified: 30 Oct 2025

    Summary: futures_task::waker may cause a use-after-free if used on a type that isn't 'static

    Details: Affected versions of the crate did not properly implement a 'static lifetime bound on the waker function. This resulted in a use-after-free if Waker::wake() is called after original data had been dropped. The flaw was corrected by adding 'static lifetime bound to the data waker takes.

    References: https://nvd.nist.gov/vuln/detail/CVE-2020-35906, https://github.com/rust-lang/futures-rs/pull/2206, https://github.com/rust-lang/futures-rs, https://rustsec.org/advisories/RUSTSEC-2020-0060.html

    Affected packages

    Package

    Name: futures-task

    Purl: pkg:cargo/futures-task

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.2.1
    Fixed -0.3.6

    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
    GHSA-r93v-9p5q-vhpf | CVE-DB