DEBIAN-CVE-2022-2928

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    DEBIAN-CVE-2022-2928

    Published: 7 Oct 2022Last Modified: 1 Sept 2026
    Upstream:
    CVE-2022-2928

    Summary:

    Details: In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.

    References: https://security-tracker.debian.org/tracker/CVE-2022-2928

    Affected packages

    Package

    Name: isc-dhcp

    Purl: pkg:deb/debian/isc-dhcp?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.4.3-2.1

    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
    DEBIAN-CVE-2022-2928 | CVE-DB