CVE-2017-3302 Use after free in MySQL Server

What is CVE-2017-3302?

CVE-2017-3302 is a high-severity use after free vulnerability in Debian Debian Linux, published on 12 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Crash in libmysqlclient.so in Oracle MySQL before 5.6.21 and 5.7.x before 5.7.5 and MariaDB through 5.5.54, 10.0.x through 10.0.29, 10.1.x through 10.1.21, and 10.2.x through 10.2.3.

Weakness: CWE-416

Which versions are affected by CVE-2017-3302?

It affects 8 products.

Products include Debian Debian Linux, Mariadb Mariadb, Oracle Mysql, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 2 more.

How do I fix CVE-2017-3302?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-3302 being exploited?

There is no known exploitation of CVE-2017-3302 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2017-3302, DLA-819-1, GHSA-77pr-jpcv-9w4v, UBUNTU-CVE-2017-3302.