PHP-FPM worker SIGSEGV after arm-shaped request
Detects a PHP-FPM child process crashing with signal 11 (SIGSEGV) as logged by the FPM master, which may indicate exploitation attempts following an arm-shaped request. Correlate with the arm fatal error by timestamp and source. Note - the logsource product linux / service php-fpm is not defined by SigmaHQ. Map it with a processing pipeline to the PHP-FPM master log (for example /var/log/php8.x-fpm.log on Debian/Ubuntu, /var/log/php-fpm/error.log on RHEL-family, container stderr for official php-fpm images, or the php-fpm systemd journal unit).
Sigma
