High7.5Red Hat & Ubuntu Linux

extract_addresses() OOB read via malformed rdlen

CVE-2026-5172 Published May 9, 2026

CVE-2026-5172

Affected products & platforms

Red Hat & Ubuntu LinuxUnclassified

Summary

extract_addresses() OOB read via malformed rdlen. Red Hat rates this important (CVSS 7.5). Weakness: CWE-125. Affected package(s): dnsmasq. Resolved in Red Hat advisory RHSA-2026:19158 — update the affected packages (`sudo dnf update`).

Affected versions

dnsmasq-0:2.90-7.el10_2

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Fixed versions

RHSA-2026:19158

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:19158 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.