UBUNTU-CVE-2026-10822

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    UBUNTU-CVE-2026-10822

    Published: 22 Jul 2026Last Modified: 17 Oct 2026
    Upstream:
    CVE-2026-10822

    Summary:

    Details: If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data, and may subsequently abort and exit. BIND will first need to store a DNS record for a key (KEY, DNSKEY, etc.). That key must specify a PRIVATEDNS algorithm (253), and in the algorithm identifier, improperly give a length longer than the actual identifier data. The invalid identifier will be stored. If BIND later needs to render that record to text, it will use the invalid length during processing, leading to a consistency check failing. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

    References: https://ubuntu.com/security/CVE-2026-10822, https://www.cve.org/CVERecord?id=CVE-2026-10822, https://kb.isc.org/docs/cve-2026-10822, https://ubuntu.com/security/notices/USN-8648-1, https://ubuntu.com/security/notices/USN-8929-1

    Affected packages

    Package

    Name: isc-dhcp

    Purl: pkg:deb/ubuntu/isc-dhcp?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.3.5-3ubuntu2
    4.3.5-3ubuntu3
    4.3.5-3ubuntu4
    4.3.5-3ubuntu5
    4.3.5-3ubuntu6
    4.3.5-3ubuntu7
    4.3.5-3ubuntu7.1
    4.3.5-3ubuntu7.2
    4.3.5-3ubuntu7.3
    4.3.5-3ubuntu7.4

    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-2026-10822 | CVE-DB