SB2026020429 - Ubuntu update for mysql-8.0
Published: February 4, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 14 secuirty vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2026-21968)
The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote authenticated user can exploit this vulnerability to perform a denial of service (DoS) attack.
2) Improper input validation (CVE-ID: CVE-2026-21964)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Thread Pooling component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
3) Improper input validation (CVE-ID: CVE-2026-21948)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
4) Improper input validation (CVE-ID: CVE-2026-21941)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
5) Improper input validation (CVE-ID: CVE-2026-21937)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: DDL component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
6) Improper input validation (CVE-ID: CVE-2026-21936)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
7) Improper input validation (CVE-ID: CVE-2025-53069)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Components Services component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
8) Improper input validation (CVE-ID: CVE-2025-53062)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
9) Improper input validation (CVE-ID: CVE-2025-53054)
The vulnerability allows a remote privileged user to damange or delete data.
The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A remote privileged user can exploit this vulnerability to damange or delete data.
10) Improper input validation (CVE-ID: CVE-2025-53053)
The vulnerability allows a remote privileged user to damange or delete data.
The vulnerability exists due to improper input validation within the Server: DML component in MySQL Server. A remote privileged user can exploit this vulnerability to damange or delete data.
11) Improper input validation (CVE-ID: CVE-2025-53045)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
12) Improper input validation (CVE-ID: CVE-2025-53044)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the InnoDB component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
13) Improper input validation (CVE-ID: CVE-2025-53042)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
14) Improper input validation (CVE-ID: CVE-2025-53040)
The vulnerability allows a remote privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the Server: Optimizer component in MySQL Server. A remote privileged user can exploit this vulnerability to perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.