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The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5 does not prevent changes to string objects that result in a negative length, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact by leveraging a script's use of .= with a long string.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Huawei Euleros 2_0_sp8 | — | Upgrade php-recodeUpgrade php-xmlUpgrade php-cliUpgrade php-processUpgrade php-fpmUpgrade php-pdoUpgrade php-xmlrpcUpgrade php-soapUpgrade php-odbcUpgrade php-commonUpgrade php-ldapUpgrade php-gdUpgrade php | Oct 11, 2022 | May 12, 2017 |
| Php | — | Upgrade to PHP version 7.1.6 | May 30, 2017 | May 12, 2017 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 12, 2017 |
| Rocky_linux | — | Upgrade php-snmpUpgrade php-mbstringUpgrade php-xmlUpgrade php-mysqlnd-debuginfoUpgrade php-pecl-rrd-debuginfoUpgrade php-pgsqlUpgrade php-fpm-debuginfoUpgrade php-json-debuginfoUpgrade php-cliUpgrade php-pecl-apcu-debugsourceUpgrade php-pgsql-debuginfoUpgrade libzip-debuginfoUpgrade libzip-develUpgrade php-bcmath-debuginfoUpgrade php-commonUpgrade php-common-debuginfoUpgrade php-pecl-apcuUpgrade php-dba-debuginfoUpgrade php-ffiUpgrade php-pecl-xdebug-debugsourceUpgrade php-pecl-zip-debuginfoUpgrade php-opcache-debuginfoUpgrade php-soap-debuginfoUpgrade php-xml-debuginfoUpgrade php-debuginfoUpgrade php-mbstring-debuginfoUpgrade php-intl-debuginfoUpgrade php-ldap-debuginfoUpgrade php-enchant-debuginfoUpgrade libzip-toolsUpgrade php-dbgUpgrade php-odbcUpgrade php-intlUpgrade php-develUpgrade php-dbaUpgrade php-opcacheUpgrade php-enchantUpgrade php-debugsourceUpgrade php-process-debuginfoUpgrade php-embedded-debuginfoUpgrade php-pecl-xdebugUpgrade php-bcmathUpgrade php-pecl-zip-debugsourceUpgrade php-pecl-zipUpgrade php-pecl-apcu-debuginfoUpgrade php-xmlrpc-debuginfoUpgrade php-soapUpgrade php-gdUpgrade php-gmpUpgrade php-gd-debuginfoUpgrade libzipUpgrade php-ffi-debuginfoUpgrade php-pecl-rrdUpgrade phpUpgrade php-pdo-debuginfoUpgrade php-mysqlndUpgrade php-gmp-debuginfoUpgrade php-dbg-debuginfoUpgrade php-embeddedUpgrade php-ldapUpgrade php-pecl-xdebug-debuginfoUpgrade php-jsonUpgrade libzip-tools-debuginfoUpgrade php-pecl-rrd-debugsourceUpgrade php-pecl-apcu-develUpgrade php-processUpgrade php-xmlrpcUpgrade php-snmp-debuginfoUpgrade php-fpmUpgrade php-odbc-debuginfoUpgrade libzip-debugsourceUpgrade php-pdoUpgrade php-cli-debuginfo | Dec 29, 2025 | Dec 27, 2025 |
| Suse | — | Upgrade php7-bz2Upgrade php72-xmlrpcUpgrade php72-sodiumUpgrade php74-fastcgiUpgrade php72-xmlwriterUpgrade php74-ctypeUpgrade php74-socketsUpgrade php72-ftpUpgrade php74-opensslUpgrade php72-posixUpgrade php72-snmpUpgrade php72-tidyUpgrade php74-tokenizerUpgrade php7-socketsUpgrade php7-opcacheUpgrade php7-domUpgrade php72-pspellUpgrade php74-gdUpgrade php72-sysvsemUpgrade php74-exifUpgrade php74-shmopUpgrade php7-embedUpgrade php7-sqliteUpgrade php7-curlUpgrade php74-xmlrpcUpgrade php72-pgsqlUpgrade php72-bcmathUpgrade php72-soapUpgrade php72-calendarUpgrade php74-opcacheUpgrade php72-opcacheUpgrade php7-intlUpgrade php74-pdoUpgrade php7-pgsqlUpgrade php74-gettextUpgrade php7-gettextUpgrade php72-socketsUpgrade php72-fastcgiUpgrade php7-bcmathUpgrade php7-pearUpgrade php7-tidyUpgrade php7-mysqlUpgrade php74-mbstringUpgrade php7-shmopUpgrade php7-odbcUpgrade php74-snmpUpgrade php72-zlibUpgrade php7-posixUpgrade php72-develUpgrade php74-enchantUpgrade php72-enchantUpgrade php7-xmlwriterUpgrade php72-xmlreaderUpgrade php7-tokenizerUpgrade php7-develUpgrade php72-sysvmsgUpgrade php72-odbcUpgrade php74-fpmUpgrade php7-ftpUpgrade php7-pharUpgrade php7-zipUpgrade php7-exifUpgrade php7-pdoUpgrade php7-soapUpgrade php7-snmpUpgrade php7-testUpgrade php74-mysqlUpgrade php74-bz2Upgrade php72-gettextUpgrade php72-ctypeUpgrade php7-gmpUpgrade php74-iconvUpgrade php74-xslUpgrade php72-fileinfoUpgrade php72-exifUpgrade php72Upgrade php72-pear-archive_tarUpgrade php7-enchantUpgrade php72-readlineUpgrade php7-wddxUpgrade php7-iconvUpgrade php74-ftpUpgrade php74-soapUpgrade php74-gmpUpgrade php7Upgrade php72-imapUpgrade php7-pear-archive_tarUpgrade php72-pharUpgrade php72-zipUpgrade php74-odbcUpgrade php7-fpmUpgrade php72-sqliteUpgrade php74-sysvmsgUpgrade php7-sysvsemUpgrade apache2-mod_php74Upgrade php7-jsonUpgrade php7-zlibUpgrade php72-intlUpgrade php7-sysvmsgUpgrade php74-sysvsemUpgrade php72-pcntlUpgrade php74-pharUpgrade php74-readlineUpgrade php7-ctypeUpgrade php74-tidyUpgrade php72-shmopUpgrade php72-xslUpgrade php7-firebirdUpgrade php7-calendarUpgrade php72-mysqlUpgrade php72-domUpgrade php72-mbstringUpgrade php74-sqliteUpgrade php7-ldapUpgrade php74-jsonUpgrade php74-intlUpgrade php72-pearUpgrade php72-gmpUpgrade php74-curlUpgrade php72-ldapUpgrade php74-bcmathUpgrade php74-xmlreaderUpgrade php74-xmlwriterUpgrade php7-opensslUpgrade php74-dbaUpgrade php7-sysvshmUpgrade php72-gdUpgrade apache2-mod_php72Upgrade php74-calendarUpgrade php72-bz2Upgrade php72-tokenizerUpgrade php72-pdoUpgrade php74-pgsqlUpgrade php7-mbstringUpgrade php74-develUpgrade php72-sysvshmUpgrade php7-xslUpgrade php7-xmlreaderUpgrade php7-fastcgiUpgrade php74-zlibUpgrade php74-sysvshmUpgrade php72-iconvUpgrade php72-opensslUpgrade php74Upgrade php72-curlUpgrade php7-fileinfoUpgrade php7-dbaUpgrade php74-sodiumUpgrade php72-jsonUpgrade php74-posixUpgrade php74-fileinfoUpgrade php74-domUpgrade php7-xmlrpcUpgrade php72-dbaUpgrade php7-readlineUpgrade php7-sodiumUpgrade php74-zipUpgrade php72-wddxUpgrade php7-gdUpgrade php72-fpmUpgrade php74-ldapUpgrade apache2-mod_php7Upgrade php7-pcntlUpgrade php74-pcntl | Feb 22, 2022 | May 12, 2017 |
| Ubuntu | — | Upgrade php8.0-cliUpgrade php7.0-fpm (Ubuntu Pro)Upgrade php7.4-fpmUpgrade php7.2-cgiUpgrade php7.4-cliUpgrade php8.0-cgiUpgrade php7.0-cgi (Ubuntu Pro)Upgrade php7.4-cgiUpgrade php8.0-fpmUpgrade php7.2-cliUpgrade php7.2-fpmUpgrade php7.0-cli (Ubuntu Pro) | Feb 23, 2022 | May 12, 2017 |
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