CVE-2019-9022: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 4.2% chance of exploitation in the next 30 days.

An issue was discovered in PHP 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.2. dns_get_record misparses a DNS response, which can allow a hostile DNS server to cause PHP to misuse memcpy, leading to read operations going past the buffer allocated for DNS data. This affects php_parserr in ext/standard/dns.c for DNS_CAA and DNS_ANY queries.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Netapp Storage Automation Store: affected versions not specified
• PHP PHP: from 7.0.0, before 7.1.26 (fixed in 7.1.26); from 7.2.0, before 7.2.14 (fixed in 7.2.14); from 7.3.0, before 7.3.2 (fixed in 7.3.2)

Published 2019-02-22. Last modified 2026-06-17.