https://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-58.html
https://www.oracle.com/security-alerts/cpuoct2017.html
For the oldstable distribution (jessie), these problems have been fixed
in version 5.5.58-0+deb8u1.
We recommend that you upgrade your mysql-5.5 packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Get the latest Linux and open source security news straight to your inbox.