CVE-2021-26708

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    CVE-2021-26708

    Published: 5 Feb 2021Last Modified: 16 Apr 2026

    Summary:

    Details: A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support.

    References: https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13, http://www.openwall.com/lists/oss-security/2021/02/05/6, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446, https://security.netapp.com/advisory/ntap-20210312-0008/, https://www.openwall.com/lists/oss-security/2021/02/04/5, http://www.openwall.com/lists/oss-security/2021/04/09/2, http://www.openwall.com/lists/oss-security/2022/01/25/14

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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
    CVE-2021-26708 | CVE-DB