CVE-2011-1490: A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when mu...

Security readout for executives and security teams

CVE-2011-1490 is a denial-of-service issue in rsyslog before 5.7.6. A local attacker could trigger a memory leak that may stop or degrade the logging daemon when specific multi-ruleset logging conditions exist. Business impact is mainly loss of log collection and monitoring reliability, not data theft or remote compromise based on the provided sources. Exposure is likely limited to hosts running rsyslog before 5.7.6 with configurations using multiple rulesets. Risk requires local ability to generate relevant log messages. Systems on vendor-maintained packages may already have backported fixes, but that must be confirmed per distribution. Treat this as a logging resilience issue. It is not presented as a remote takeover risk, but losing rsyslog can blind monitoring and incident response. Remediate legacy rsyslog packages, especially on systems where reliable logs support compliance, alerting, or forensic readiness. Mitigation focus: Upgrade rsyslog to 5.7.6 or a vendor-fixed package.; Check Debian, Red Hat, or openSUSE advisories for backported fixes.; Review rsyslog deployments using multiple rulesets for exposure..

Prepared

Jun 6, 2026, 04:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.