CVE-2021-4028

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    CVE-2021-4028

    Published: 24 Aug 2022Last Modified: 14 Mar 2026

    Summary:

    Details: A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.

    References: https://security.netapp.com/advisory/ntap-20221228-0002/, https://access.redhat.com/security/cve/CVE-2021-4028, https://bugzilla.redhat.com/show_bug.cgi?id=2027201, https://bugzilla.suse.com/show_bug.cgi?id=1193167#c0, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0bdc5afaa74, https://lkml.org/lkml/2021/10/4/697

    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-2021-4028 | CVE-DB