CVE-2022-2526

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    CVE-2022-2526

    Published: 9 Sept 2022Last Modified: 12 Aug 2026

    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://github.com/CVEProject/cvelistV5/tree/main/cves/2022/2xxx/CVE-2022-2526.json, https://nvd.nist.gov/vuln/detail/CVE-2022-2526, https://security.netapp.com/advisory/ntap-20221111-0005/, https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 1742aae2aa8cd33897250d6fcfbe10928e43eb2f
    Fixed -d973d94dec349fb676fdd844f6fe2ada3538f27c

    Affected versions

    240

    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-2022-2526 | CVE-DB