========================================================================== Ubuntu Security Notice USN-8320-1 May 27, 2026
memcached vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Memcached could be made to expose sensitive information over the network. Software Description: - memcached: High-performance in-memory object caching system Details: It was discovered that Memcached's SASL password database authentication had a timing side channel when handling username and password data. A remote attacker could possibly use this issue to obtain sensitive information. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS memcached 1.6.40-1ubuntu0.1 Ubuntu 25.10 memcached 1.6.38-1ubuntu0.1 Ubuntu 24.04 LTS memcached 1.6.24-1ubuntu0.1 Ubuntu 22.04 LTS memcached 1.6.14-1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8320-1 CVE-2026-47783, CVE-2026-47784 Package Information: https://launchpad.net/ubuntu/+source/memcached/1.6.40-1ubuntu0.1 https://launchpad.net/ubuntu/+source/memcached/1.6.38-1ubuntu0.1 https://launchpad.net/ubuntu/+source/memcached/1.6.24-1ubuntu0.1 https://launchpad.net/ubuntu/+source/memcached/1.6.14-1ubuntu0.2
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