Medium severity5.9NVD Advisory· Published Jun 22, 2026· Updated Jul 8, 2026
CVE-2026-12725
CVE-2026-12725
Description
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 unsupported algorithm or digest types can cause dnsmasq to write past the end of an internal logging buffer. A remote attacker able to supply such a DNS response may crash the dnsmasq process, resulting in denial of service.
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Affected products
8- cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*Range: >=4.0,<=4.22.1
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- osv-coords2 versionspkg:rpm/opensuse/dnsmasq&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/dnsmasq&distro=openSUSE%20Tumbleweed
< 2.93-160000.1.1+ 1 more
- (no CPE)range: < 2.93-160000.1.1
- (no CPE)range: < 2.93-1.1
Patches
Vulnerability mechanics
References
2- access.redhat.com/security/cve/CVE-2026-12725nvdMitigationVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
News mentions
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