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ext/session/session.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 does not properly maintain a certain hash data structure, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors related to session deserialization.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Apple Osx Apachemodphp | — | Upgrade macOS to the latest version | Nov 11, 2016 | Jul 25, 2016 |
| Debian | — | Upgrade php7.0Upgrade php5 | Jul 27, 2016 | Jul 25, 2016 |
| Freebsd | — | Upgrade php56-xmlrpcUpgrade php56-odbcUpgrade php70Upgrade php70-zipUpgrade php55-exifUpgrade php55-odbcUpgrade php55-gdUpgrade php56-gdUpgrade php70-snmpUpgrade php70-gdUpgrade php55Upgrade php56-snmpUpgrade php70-exifUpgrade php55-zipUpgrade php56Upgrade php56-bz2Upgrade php70-curlUpgrade php55-snmpUpgrade php56-exifUpgrade php70-bz2Upgrade php70-mcryptUpgrade php56-zipUpgrade php55-xmlrpcUpgrade php55-bz2Upgrade php70-odbcUpgrade php70-xmlrpc | Dec 10, 2025 | Jul 26, 2016 |
| Gentoo Linux | — | Upgrade dev-lang/php. | Oct 30, 2017 | Jul 25, 2016 |
| Huawei Euleros 2_0_sp1 | — | Upgrade php-soapUpgrade php-ldapUpgrade php-gdUpgrade php-pgsqlUpgrade php-pdoUpgrade phpUpgrade php-commonUpgrade php-cliUpgrade php-recodeUpgrade php-xmlrpcUpgrade php-processUpgrade php-mysqlUpgrade php-xmlUpgrade php-odbc | Nov 30, 2017 | Jul 25, 2016 |
| Huawei Euleros 2_0_sp2 | — | Upgrade php-recodeUpgrade php-processUpgrade php-mysqlUpgrade php-commonUpgrade phpUpgrade php-cliUpgrade php-ldapUpgrade php-pdoUpgrade php-gdUpgrade php-soapUpgrade php-xmlUpgrade php-odbcUpgrade php-pgsqlUpgrade php-xmlrpc | Nov 30, 2017 | Jul 25, 2016 |
| Oracle Solaris | — | Upgrade web/php-56 to version 5.6.30-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/php-56/extension/php-suhosin-extension to version 0.9.37.1-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/php-56/extension/php-xdebug to version 2.3.2-0.175.3.22.0.2.0 on Solaris 11.3 | Jul 19, 2017 | Jul 25, 2016 |
| Php | — | Upgrade to PHP version 5.6.24Upgrade to PHP version 5.5.38Upgrade to PHP version 7.0.9 | Aug 2, 2016 | Jul 25, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jul 8, 2016 |
| Suse | — | Upgrade apache2-mod_php7Upgrade php5-ctypeUpgrade php53-tokenizerUpgrade php7-wddxUpgrade php53-wddxUpgrade php5-pgsqlUpgrade php7-jsonUpgrade php5-tokenizerUpgrade php7-iconvUpgrade php7-develUpgrade php5-intlUpgrade php5-gdUpgrade php5-fpmUpgrade php7-bcmathUpgrade php53-pgsqlUpgrade php5-imapUpgrade php53-soapUpgrade php5-socketsUpgrade php5-xslUpgrade php7-sysvsemUpgrade php53-jsonUpgrade php7-xmlwriterUpgrade php53-xmlrpcUpgrade php53-exifUpgrade php5-zipUpgrade php7-enchantUpgrade php53-develUpgrade php7-mysqlUpgrade php53-domUpgrade php5-xmlwriterUpgrade php53-sysvsemUpgrade php53-tidyUpgrade php7-snmpUpgrade php5-pearUpgrade php5-pspellUpgrade php53-pspellUpgrade php53-opensslUpgrade php7-pdoUpgrade php7-opensslUpgrade php7-pgsqlUpgrade php53-sysvmsgUpgrade php7-sysvmsgUpgrade php5-domUpgrade php5-xmlrpcUpgrade php5-iconvUpgrade php7-curlUpgrade php53-ftpUpgrade php7-zlibUpgrade php53-bz2Upgrade php53-suhosinUpgrade php7-shmopUpgrade php5-gettextUpgrade php53-mysqlUpgrade php7-tokenizerUpgrade php5-suhosinUpgrade php7-pharUpgrade php53-ldapUpgrade php53-mbstringUpgrade apache2-mod_php53Upgrade php5-dbaseUpgrade php5-posixUpgrade php53-gettextUpgrade php7-fastcgiUpgrade php5-wddxUpgrade php7-odbcUpgrade php5-exifUpgrade php53-curlUpgrade apache2-mod_php5Upgrade php5-zlibUpgrade php5-fileinfoUpgrade php7-ftpUpgrade php53-intlUpgrade php7-fileinfoUpgrade php5-opensslUpgrade php7-fpmUpgrade php7-ldapUpgrade php7-calendarUpgrade php7-ctypeUpgrade php5-sysvmsgUpgrade php7-mbstringUpgrade php5-mbstringUpgrade php5-sysvshmUpgrade php53-zipUpgrade php7-gettextUpgrade php5-odbcUpgrade php53-odbcUpgrade php7Upgrade php5-pdoUpgrade php5-mcryptUpgrade php5-mysqlUpgrade php7-gdUpgrade php5-pharUpgrade php5-dbaUpgrade php5-bcmathUpgrade php5-gmpUpgrade php5-sqliteUpgrade php7-exifUpgrade php53-mcryptUpgrade php7-intlUpgrade php5-jsonUpgrade php5-fastcgiUpgrade php53-gmpUpgrade php7-pearUpgrade php53-shmopUpgrade php53-ctypeUpgrade php53-socketsUpgrade php5-opcacheUpgrade php5-develUpgrade php5-soapUpgrade php53-xslUpgrade php5-shmopUpgrade php53-zlibUpgrade php53-readlineUpgrade php53-pcntlUpgrade php7-socketsUpgrade php7-imapUpgrade php53-iconvUpgrade php7-pcntlUpgrade php5Upgrade php7-domUpgrade php5-calendarUpgrade php53-fileinfoUpgrade php7-xmlrpcUpgrade php53-bcmathUpgrade php53-posixUpgrade php7-mcryptUpgrade php7-opcacheUpgrade php7-posixUpgrade php53-calendarUpgrade php53-fastcgiUpgrade php5-sysvsemUpgrade php53-dbaUpgrade php7-dbaUpgrade php5-curlUpgrade php53-sqliteUpgrade php7-pear-archive_tarUpgrade php7-xmlreaderUpgrade php53-snmpUpgrade php53-pearUpgrade php5-enchantUpgrade php7-sqliteUpgrade php7-pspellUpgrade php7-soapUpgrade php53-pdoUpgrade php53-xmlreaderUpgrade php53-gdUpgrade php7-xslUpgrade php7-gmpUpgrade php5-snmpUpgrade php53Upgrade php7-bz2Upgrade php53-imapUpgrade php7-sysvshmUpgrade php5-pcntlUpgrade php5-hashUpgrade php5-ftpUpgrade php53-sysvshmUpgrade php53-xmlwriterUpgrade php5-bz2Upgrade php7-zipUpgrade php5-xmlreaderUpgrade php5-ldap | Aug 22, 2016 | Jul 25, 2016 |
| Ubuntu | — | Upgrade libapache2-mod-php7.0Upgrade php7.0-fpmUpgrade php7.0-cliUpgrade libapache2-mod-php5Upgrade php7.0-cgiUpgrade php5-cliUpgrade php5-cgiUpgrade php5-fpm | Aug 2, 2016 | Jul 25, 2016 |
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