A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 5.3 · red hatNVD modified 2026-10-29 12:47
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 2
- https://access.redhat.com/security/cve/CVE-2026-93011 vdb-entry, x_refsource_redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2536082 issue-tracking, x_refsource_redhat