Ubuntu Security Notices USN-8106-1 USN-8106-1: Valkey vulnerabilities Publication date 18 March 2026 Overview Several security issues were fixed in Valkey. Releases 25.10 24.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages valkey - Persistent key-value database with network interface Details It was discovered that Valkey incorrectly handled errors for lua scripts. An attacker could possibly use this issue to inject arbitrary information into the response stream for other clients. ( CVE-2025-67733 ) It was discovered that Valkey incorrectly handled malformed cluster bus messages. A remote attacker could possibly use this issue to cause Valkey to crash, resulting in a denial of service. ( CVE-2026-21863 ) It was discovered that Valkey incorrectly handled errors for lua scripts. An attacker could possibly use this issue to inject arbitrary information into the response stream for other clients. ( CVE-2025-67733 ) It was discovered that Valkey incorrectly handled malformed cluster bus messages. A remote attacker could possibly use this issue to cause Valkey to crash, resulting in a denial of service. ( CVE-2026-21863 ) Update instructions This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 25.10 questing valkey-server – 8.1.6+dfsg1-0ubuntu0.1 24.04 LTS noble valkey-server – 7.2.12+dfsg1-0ubuntu0.1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-21863 CVE-2025-67733 CVE-2026-21863 CVE-2025-67733