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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-snmpUpgrade php55-gdUpgrade php70-gdUpgrade php56-gdUpgrade php56-xmlrpcUpgrade php70-zipUpgrade php70Upgrade php55-odbcUpgrade php55Upgrade php55-exifUpgrade php56-odbcUpgrade php55-zipUpgrade php70-exifUpgrade php70-snmpUpgrade php55-bz2Upgrade php55-snmpUpgrade php70-odbcUpgrade php56-exifUpgrade php55-xmlrpcUpgrade php70-mcryptUpgrade php56-bz2Upgrade php70-bz2Upgrade php56Upgrade php70-xmlrpcUpgrade php70-curlUpgrade php56-zip | Dec 10, 2025 | Jul 26, 2016 |
| Gentoo Linux | — | Upgrade dev-lang/php. | Oct 30, 2017 | Jul 25, 2016 |
| Huawei Euleros 2_0_sp1 | — | Upgrade phpUpgrade php-recodeUpgrade php-xmlrpcUpgrade php-processUpgrade php-commonUpgrade php-odbcUpgrade php-xmlUpgrade php-mysqlUpgrade php-cliUpgrade php-ldapUpgrade php-pgsqlUpgrade php-gdUpgrade php-pdoUpgrade php-soap | Nov 30, 2017 | Jul 25, 2016 |
| Huawei Euleros 2_0_sp2 | — | Upgrade php-soapUpgrade php-xmlUpgrade php-ldapUpgrade php-gdUpgrade php-pgsqlUpgrade php-odbcUpgrade php-xmlrpcUpgrade php-pdoUpgrade php-cliUpgrade php-recodeUpgrade php-commonUpgrade phpUpgrade php-mysqlUpgrade php-process | Nov 30, 2017 | Jul 25, 2016 |
| Oracle Solaris | — | Upgrade 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 11.3Upgrade web/php-56 to version 5.6.30-0.175.3.22.0.2.0 on Solaris 11.3 | Jul 19, 2017 | Jul 25, 2016 |
| Php | — | Upgrade to PHP version 7.0.9Upgrade to PHP version 5.6.24Upgrade to PHP version 5.5.38 | Aug 2, 2016 | Jul 25, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jul 8, 2016 |
| Suse | — | Upgrade php7-zipUpgrade php5-dbaUpgrade php7-sqliteUpgrade php7-mcryptUpgrade php53-snmpUpgrade php53-pearUpgrade php5-enchantUpgrade php7-pspellUpgrade php53-odbcUpgrade php7-pear-archive_tarUpgrade php53-posixUpgrade php53-calendarUpgrade php5-sysvsemUpgrade php5-pharUpgrade php53-fileinfoUpgrade php5-mcryptUpgrade php7-gdUpgrade php5-pdoUpgrade php5Upgrade php5-ldapUpgrade php7-xmlrpcUpgrade php5-mysqlUpgrade php7-intlUpgrade php53-mcryptUpgrade php53-iconvUpgrade php5-gmpUpgrade php5-jsonUpgrade php5-opcacheUpgrade php5-calendarUpgrade php5-fastcgiUpgrade php53-gmpUpgrade php53-xmlreaderUpgrade php7-exifUpgrade php7-domUpgrade php7-pearUpgrade php7-gmpUpgrade php53-zipUpgrade php5-sqliteUpgrade php7-pcntlUpgrade php7-gettextUpgrade php5-odbcUpgrade php53-dbaUpgrade php5-ftpUpgrade php7-sysvshmUpgrade php5-hashUpgrade php7-bz2Upgrade php53-sysvshmUpgrade php5-pcntlUpgrade php5-bz2Upgrade php53Upgrade php53-imapUpgrade php53-bcmathUpgrade php7-soapUpgrade php7-xmlreaderUpgrade php7-socketsUpgrade php53-fastcgiUpgrade php53-xslUpgrade php5-snmpUpgrade php7-dbaUpgrade php7Upgrade php53-zlibUpgrade php53-xmlwriterUpgrade php5-shmopUpgrade php53-readlineUpgrade php7-imapUpgrade php53-shmopUpgrade php7-opcacheUpgrade php5-xmlreaderUpgrade php53-pcntlUpgrade php5-soapUpgrade php5-bcmathUpgrade php7-xslUpgrade php7-posixUpgrade php53-gdUpgrade php53-socketsUpgrade php53-sqliteUpgrade php5-develUpgrade php53-ctypeUpgrade php5-curlUpgrade php53-pdoUpgrade php7-wddxUpgrade php53-tokenizerUpgrade php7-jsonUpgrade php5-iconvUpgrade php5-fileinfoUpgrade php53-mysqlUpgrade php5-posixUpgrade php5-tokenizerUpgrade php7-fpmUpgrade php5-gdUpgrade php5-xmlrpcUpgrade php53-domUpgrade php53-wddxUpgrade php53-xmlrpcUpgrade php5-zlibUpgrade php53-ftpUpgrade php5-suhosinUpgrade php5-mbstringUpgrade php53-bz2Upgrade php53-opensslUpgrade php5-pspellUpgrade php7-opensslUpgrade php53-pgsqlUpgrade php53-pspellUpgrade php7-enchantUpgrade php53-exifUpgrade php53-mbstringUpgrade php5-pgsqlUpgrade php7-shmopUpgrade php5-xmlwriterUpgrade php53-jsonUpgrade php5-sysvshmUpgrade php7-snmpUpgrade php53-intlUpgrade apache2-mod_php7Upgrade php53-sysvsemUpgrade php5-wddxUpgrade php7-odbcUpgrade php7-curlUpgrade php7-calendarUpgrade php7-tokenizerUpgrade php5-imapUpgrade php7-pdoUpgrade php5-ctypeUpgrade php7-sysvsemUpgrade php53-suhosinUpgrade php5-pearUpgrade php7-mbstringUpgrade php7-develUpgrade php5-dbaseUpgrade php53-soapUpgrade php5-gettextUpgrade php7-xmlwriterUpgrade php53-curlUpgrade php7-bcmathUpgrade php7-pgsqlUpgrade php5-xslUpgrade php53-gettextUpgrade php5-exifUpgrade php7-fileinfoUpgrade php7-sysvmsgUpgrade php53-tidyUpgrade apache2-mod_php5Upgrade php7-ctypeUpgrade php5-sysvmsgUpgrade apache2-mod_php53Upgrade php5-opensslUpgrade php7-zlibUpgrade php5-socketsUpgrade php7-fastcgiUpgrade php53-ldapUpgrade php53-sysvmsgUpgrade php7-mysqlUpgrade php5-fpmUpgrade php5-domUpgrade php7-iconvUpgrade php7-ldapUpgrade php5-zipUpgrade php53-develUpgrade php5-intlUpgrade php7-pharUpgrade php7-ftp | Aug 22, 2016 | Jul 25, 2016 |
| Ubuntu | — | Upgrade php7.0-fpmUpgrade libapache2-mod-php7.0Upgrade php7.0-cliUpgrade php7.0-cgiUpgrade libapache2-mod-php5Upgrade php5-cgiUpgrade php5-fpmUpgrade php5-cli | Aug 2, 2016 | Jul 25, 2016 |
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