UBUNTU-CVE-2022-2526

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    UBUNTU-CVE-2022-2526

    Published: 24 Aug 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2022-2526

    Summary:

    Details: A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

    References: https://ubuntu.com/security/CVE-2022-2526, https://ubuntu.com/security/notices/USN-5583-1, https://ubuntu.com/security/notices/USN-5583-2, https://www.cve.org/CVERecord?id=CVE-2022-2526

    Affected packages

    Package

    Name: systemd

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -237-3ubuntu10.54

    Affected versions

    234-2ubuntu12

    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
    UBUNTU-CVE-2022-2526 | CVE-DB