Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.19 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | MySQL Server | 8.0.19 and prior | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mysql-8.0 | 8.0.20-0ubuntu0.20.04.1 | — |
| Ubuntu 16.04 LTS | percona-server-5.6 +1 | No fix yet | — |
| Ubuntu 14.04 LTS | mysql-5.5 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | mecab | 0.996-1.module+el8.0.0+3898+e09bb8de.9 | RHSA-2020:3732 |
| RHEL 8 | mecab-ipadic +1 | 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2020:3732 |
| RHEL 8 | mysql +6 | 8.0.21-1.module+el8.2.0+7855+47abd494 | RHSA-2020:3732 |
| RHEL 3 | rh-mysql80-mysql +9 | 8.0.21-1.el7 | RHSA-2020:3518 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.1 EUS | mecab | 0.996-1.module+el8.0.0+3898+e09bb8de.9 | RHSA-2020:3757 |
| RHEL 8.1 EUS | mecab-ipadic +1 | 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2020:3757 |
| RHEL 8.1 EUS | mysql +6 | 8.0.21-1.module+el8.1.0+7854+62e1520f | RHSA-2020:3757 |
| RHEL 8.0 E4S | mecab | 0.996-1.module+el8.0.0+3898+e09bb8de.9 | RHSA-2020:3755 |
| RHEL 8.0 E4S | mecab-ipadic +1 | 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2020:3755 |
| RHEL 8.0 E4S | mysql +6 | 8.0.21-1.module+el8.0.0+7853+3a2b0b25 | RHSA-2020:3755 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | mecab | 0.996-1.module_el8.4.0+2532+b8928c02.9 | ALSA-2020:3732 |
| AlmaLinux 8 | mecab-ipadic +1 | 2.7.0.20070801-16.module_el8.4.0+2532+b8928c02 | ALSA-2020:3732 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | mecab | 0.996-1.module+el8.3.0+242+87d3366a.9 | RLSA-2020:3732 |
| Rocky Linux 8 | mecab-ipadic | 2.7.0.20070801-16.module+el8.3.0+242+87d3366a | RLSA-2020:3732 |
| Rocky Linux 8 | mysql | 8.0.21-1.module+el8.3.0+242+87d3366a | RLSA-2020:3732 |
Advisories 7
- ALSA-2020:3732 Important: mysql:8.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2020:3757 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:3755 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:3732 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:3518 Red Hat Security Advisory: rh-mysql80-mysql security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RLSA-2020:3732 Important: mysql:8.0 security update Rocky Linux Security Advisories · Feb 4, 2026
- WID-SEC-2023-0067 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 11, 2023
References
- https://www.oracle.com/security-alerts/cpujan2021.html
- FEDORA-2021-db50ab62d3 vendor-advisory
- FEDORA-2021-b1d1655cef vendor-advisory
- https://security.netapp.com/advisory/ntap-20210219-0003/
- GLSA-202105-27 vendor-advisory