Astra Linux – Vulnerability in dnsmasq

A vulnerability was discovered in dnsmasq prior to version 2.81. This vulnerability involves a memory leak, allowing remote attackers to cause a denial of service due to excessive memory consumption through mechanisms related to DHCP response creation...

Astra Linux – Vulnerability in dnsmasq

A single-byte, non-arbitrary write/use-after-free flaw was discovered in dnsmasq. This flaw allows an attacker to send a crafted packet processed by dnsmasq, potentially causing a denial of service...

EulerOS 2.0 SP11 : dnsmasq (EulerOS-SA-2026-3119)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client...

EulerOS 2.0 SP15 : dnsmasq (EulerOS-SA-2026-2880)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.19.39 bug fix and security update

Red Hat OpenShift Container Platform release 4.19.39 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.19. Red Hat Product Security has rated this update as having a...

EulerOS Virtualization 2.12.0 : dnsmasq (EulerOS-SA-2026-2770)

According to the versions of the dnsmasq package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RF...

GHSA-28HJ-3GJ2-63M5 vulnerabilities

Vulnerabilities for packages: dnsmasq...

EulerOS 2.0 SP10 : dnsmasq (EulerOS-SA-2026-2645)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root...

EulerOS 2.0 SP12 : dnsmasq (EulerOS-SA-2026-2584)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client...

EulerOS 2.0 SP12 : dnsmasq (EulerOS-SA-2026-2524)

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client...

dnsmasq: NSEC bitmap parsing infinite loop

A denial of service vulnerability was discovered in dnsmasq's DNSSEC validation. When parsing NSEC and NSEC3 bitmap records, the window iteration logic fails to account for the 2-byte window header when advancing through the bitmap data. A specially crafted DNS response with a zero-length bitmap...

CVE-2026-12969

An out-of-bounds read vulnerability exists in dnsmasq's findsoa function in src/rfc1035.c. When parsing NS section records, extractname is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can...

Linux Distros Unpatched Vulnerability : CVE-2026-12725

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and query logging are both enabled, logging of DS or DNSKEY replies containing...

Slackware Linux 15.0 / current dnsmasq Vulnerability (SSA:2026-155-01)

The version of dnsmasq installed on the remote host is prior to 2.93. It is, therefore, affected by a vulnerability as referenced in the SSA:2026-155-01 advisory. New dnsmasq packages are available for Slackware 15.0 and -current to fix a security issue. Tenable has extracted the preceding...

CVE-2026-5172 vulnerabilities

Vulnerabilities for packages: dnsmasq...

GHSA-57VP-FFX7-7GM6 vulnerabilities

Vulnerabilities for packages: dnsmasq...

CVE-2026-4893 vulnerabilities

Vulnerabilities for packages: dnsmasq...

Ubuntu 14.04 LTS : Dnsmasq vulnerability (USN-8311-1)

The remote Ubuntu 14.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8311-1 advisory. Petr Menk discovered that Dnsmasq incorrectly handled certain input in the dhcprelease utility. A local attacker could possibly use this issue to cause Dnsmasq to...

Exploit for CVE-2026-5172

CVE20265172poc CVE-2026-5172: buffer overflow in extractaddre...

dnsmasq: Broken ECS source validation bypass

A validation bypass was discovered in dnsmasq's RFC 7871 client subnet ECS handling. When verifying ECS source information in DNS responses, dnsmasq passes the OPT record length instead of the full packet length to the validation function.This causes all internal bounds checks to fail, completely...