CVE-2021-3564

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    CVE-2021-3564

    Published: 8 Jun 2021Last Modified: 16 Apr 2026

    Summary:

    Details: A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.

    References: https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html, https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html, https://bugzilla.redhat.com/show_bug.cgi?id=1964139, https://www.openwall.com/lists/oss-security/2021/05/25/1, http://www.openwall.com/lists/oss-security/2021/05/25/1, http://www.openwall.com/lists/oss-security/2021/06/01/2

    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-2021-3564 | CVE-DB