DEBIAN-CVE-2026-93007

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    DEBIAN-CVE-2026-93007

    Published: 29 Oct 2026Last Modified: 6 Nov 2026
    Upstream:
    CVE-2026-93007

    Summary:

    Details: A flaw was found in dnsmasq. The TCP DNS service uses a small fixed pool of child processes and does not set a receive timeout on client connections. A remote attacker can open idle TCP connections to port 53 and occupy the entire pool, preventing new TCP DNS connections and DNSSEC validation that requires TCP fallback. UDP DNS resolution continues, and occupied slots are released after a fixed lifetime.

    References: https://security-tracker.debian.org/tracker/CVE-2026-93007

    Affected packages

    Package

    Name: dnsmasq

    Purl: pkg:deb/debian/dnsmasq?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.89-1

    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-2026-93007 | CVE-DB