CLEANSTART-2026-KY78316

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    CLEANSTART-2026-KY78316

    Published: 4 Sept 2026Last Modified: 4 Sept 2026

    Summary: dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-...

    Details: Multiple security vulnerabilities affect the dnsmasq package. dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-KY78316.json, https://osv.dev/vulnerability/CVE-2017-13704, https://osv.dev/vulnerability/CVE-2017-14491, https://osv.dev/vulnerability/CVE-2017-14492, https://osv.dev/vulnerability/CVE-2017-14493, https://osv.dev/vulnerability/CVE-2017-14494, https://osv.dev/vulnerability/CVE-2017-14495, https://osv.dev/vulnerability/CVE-2017-14496, https://osv.dev/vulnerability/CVE-2017-15107, https://osv.dev/vulnerability/CVE-2019-14834, https://osv.dev/vulnerability/CVE-2020-25681, https://osv.dev/vulnerability/CVE-2020-25682, https://osv.dev/vulnerability/CVE-2020-25683, https://osv.dev/vulnerability/CVE-2020-25684, https://osv.dev/vulnerability/CVE-2020-25685, https://osv.dev/vulnerability/CVE-2020-25686, https://osv.dev/vulnerability/CVE-2020-25687, https://osv.dev/vulnerability/CVE-2021-3448, https://osv.dev/vulnerability/CVE-2022-0934, https://osv.dev/vulnerability/CVE-2023-28450, https://osv.dev/vulnerability/CVE-2023-50387, https://osv.dev/vulnerability/CVE-2023-50868, https://osv.dev/vulnerability/CVE-2026-2291, https://osv.dev/vulnerability/CVE-2026-4890, https://osv.dev/vulnerability/CVE-2026-4891, https://osv.dev/vulnerability/CVE-2026-4892, https://osv.dev/vulnerability/CVE-2026-4893, https://osv.dev/vulnerability/CVE-2026-5172, https://nvd.nist.gov/vuln/detail/CVE-2017-13704, https://nvd.nist.gov/vuln/detail/CVE-2017-14491, https://nvd.nist.gov/vuln/detail/CVE-2017-14492, https://nvd.nist.gov/vuln/detail/CVE-2017-14493, https://nvd.nist.gov/vuln/detail/CVE-2017-14494, https://nvd.nist.gov/vuln/detail/CVE-2017-14495, https://nvd.nist.gov/vuln/detail/CVE-2017-14496, https://nvd.nist.gov/vuln/detail/CVE-2017-15107, https://nvd.nist.gov/vuln/detail/CVE-2019-14834, https://nvd.nist.gov/vuln/detail/CVE-2020-25681, https://nvd.nist.gov/vuln/detail/CVE-2020-25682, https://nvd.nist.gov/vuln/detail/CVE-2020-25683, https://nvd.nist.gov/vuln/detail/CVE-2020-25684, https://nvd.nist.gov/vuln/detail/CVE-2020-25685, https://nvd.nist.gov/vuln/detail/CVE-2020-25686, https://nvd.nist.gov/vuln/detail/CVE-2020-25687, https://nvd.nist.gov/vuln/detail/CVE-2021-3448, https://nvd.nist.gov/vuln/detail/CVE-2022-0934, https://nvd.nist.gov/vuln/detail/CVE-2023-28450, https://nvd.nist.gov/vuln/detail/CVE-2023-50387, https://nvd.nist.gov/vuln/detail/CVE-2023-50868, https://nvd.nist.gov/vuln/detail/CVE-2026-2291, https://nvd.nist.gov/vuln/detail/CVE-2026-4890, https://nvd.nist.gov/vuln/detail/CVE-2026-4891, https://nvd.nist.gov/vuln/detail/CVE-2026-4892, https://nvd.nist.gov/vuln/detail/CVE-2026-4893, https://nvd.nist.gov/vuln/detail/CVE-2026-5172

    Affected packages

    Package

    Name: dnsmasq

    Purl:

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.92_p2-r0

    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