Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-243
Advisory Release Date: 2026-10-21 09:00 Pacific
Advisory Updated Date: 2026-10-21 15:07 Pacific
Severity:
Important
Issue Overview:
Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-109619:
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).
CVE-2026-109618:
PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).
Affected Packages:
php8.5
Issue Correction:
Run dnf update php8.5 or dnf update --advisory ALAS2027-2026-243 to update your system.
New Packages:
aarch64:
php8.5-gd-8.5.12-1.amzn2027.0.1.aarch64
php8.5-soap-8.5.12-1.amzn2027.0.1.aarch64
php8.5-dbg-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-devel-8.5.12-1.amzn2027.0.1.aarch64
php8.5-enchant-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-odbc-8.5.12-1.amzn2027.0.1.aarch64
php8.5-pdo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-mysqlnd-8.5.12-1.amzn2027.0.1.aarch64
php8.5-xml-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-odbc-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-pgsql-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-cli-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-sodium-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-common-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-cli-8.5.12-1.amzn2027.0.1.aarch64
php8.5-ffi-8.5.12-1.amzn2027.0.1.aarch64
php8.5-gmp-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-dba-8.5.12-1.amzn2027.0.1.aarch64
php8.5-fpm-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-mbstring-8.5.12-1.amzn2027.0.1.aarch64
php8.5-mbstring-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-sodium-8.5.12-1.amzn2027.0.1.aarch64
php8.5-process-8.5.12-1.amzn2027.0.1.aarch64
php8.5-ffi-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-mysqlnd-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-xml-8.5.12-1.amzn2027.0.1.aarch64
php8.5-intl-8.5.12-1.amzn2027.0.1.aarch64
php8.5-zip-8.5.12-1.amzn2027.0.1.aarch64
php8.5-soap-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-modphp-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-pgsql-8.5.12-1.amzn2027.0.1.aarch64
php8.5-modphp-8.5.12-1.amzn2027.0.1.aarch64
php8.5-zip-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-tidy-8.5.12-1.amzn2027.0.1.aarch64
php8.5-snmp-8.5.12-1.amzn2027.0.1.aarch64
php8.5-gmp-8.5.12-1.amzn2027.0.1.aarch64
php8.5-ldap-8.5.12-1.amzn2027.0.1.aarch64
php8.5-tidy-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-embedded-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-dba-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-intl-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-process-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-enchant-8.5.12-1.amzn2027.0.1.aarch64
php8.5-debugsource-8.5.12-1.amzn2027.0.1.aarch64
php8.5-8.5.12-1.amzn2027.0.1.aarch64
php8.5-pdo-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-dbg-8.5.12-1.amzn2027.0.1.aarch64
php8.5-bcmath-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-bcmath-8.5.12-1.amzn2027.0.1.aarch64
php8.5-embedded-8.5.12-1.amzn2027.0.1.aarch64
php8.5-common-8.5.12-1.amzn2027.0.1.aarch64
php8.5-fpm-8.5.12-1.amzn2027.0.1.aarch64
php8.5-ldap-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-snmp-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
php8.5-gd-debuginfo-8.5.12-1.amzn2027.0.1.aarch64
src:
php8.5-8.5.12-1.amzn2027.0.1.src
x86_64:
php8.5-gmp-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-modphp-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-gd-8.5.12-1.amzn2027.0.1.x86_64
php8.5-mbstring-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-sodium-8.5.12-1.amzn2027.0.1.x86_64
php8.5-gmp-8.5.12-1.amzn2027.0.1.x86_64
php8.5-pdo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-common-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-ffi-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-bcmath-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-fpm-8.5.12-1.amzn2027.0.1.x86_64
php8.5-devel-8.5.12-1.amzn2027.0.1.x86_64
php8.5-mbstring-8.5.12-1.amzn2027.0.1.x86_64
php8.5-dba-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-enchant-8.5.12-1.amzn2027.0.1.x86_64
php8.5-common-8.5.12-1.amzn2027.0.1.x86_64
php8.5-odbc-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-intl-8.5.12-1.amzn2027.0.1.x86_64
php8.5-soap-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-fpm-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-embedded-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-gd-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-pgsql-8.5.12-1.amzn2027.0.1.x86_64
php8.5-process-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-xml-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-ldap-8.5.12-1.amzn2027.0.1.x86_64
php8.5-embedded-8.5.12-1.amzn2027.0.1.x86_64
php8.5-tidy-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-ldap-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-pgsql-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-cli-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-pdo-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-zip-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-modphp-8.5.12-1.amzn2027.0.1.x86_64
php8.5-mysqlnd-8.5.12-1.amzn2027.0.1.x86_64
php8.5-cli-8.5.12-1.amzn2027.0.1.x86_64
php8.5-snmp-8.5.12-1.amzn2027.0.1.x86_64
php8.5-dbg-8.5.12-1.amzn2027.0.1.x86_64
php8.5-soap-8.5.12-1.amzn2027.0.1.x86_64
php8.5-bcmath-8.5.12-1.amzn2027.0.1.x86_64
php8.5-zip-8.5.12-1.amzn2027.0.1.x86_64
php8.5-sodium-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-debugsource-8.5.12-1.amzn2027.0.1.x86_64
php8.5-ffi-8.5.12-1.amzn2027.0.1.x86_64
php8.5-snmp-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-xml-8.5.12-1.amzn2027.0.1.x86_64
php8.5-tidy-8.5.12-1.amzn2027.0.1.x86_64
php8.5-dbg-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-mysqlnd-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-intl-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-enchant-debuginfo-8.5.12-1.amzn2027.0.1.x86_64
php8.5-dba-8.5.12-1.amzn2027.0.1.x86_64
php8.5-odbc-8.5.12-1.amzn2027.0.1.x86_64
php8.5-8.5.12-1.amzn2027.0.1.x86_64
php8.5-process-8.5.12-1.amzn2027.0.1.x86_64