CVE-2009-0028: The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary signals t...

Security readout for executives and security teams

This is an old Linux kernel flaw where a local, unprivileged user process could cause signals to be delivered to a parent process unexpectedly. The business risk is mainly disruption or interference on legacy Linux systems, not direct remote compromise based on the provided sources. Exposure is likely limited to legacy Linux systems running kernel 2.6.28 or earlier, or vendor products that shipped affected kernels. The attacker needs local user or process execution on the host. Prioritize this for legacy Linux estate cleanup. It is not evidenced as remotely exploitable or actively exploited here, but unpatched old kernels increase operational and security risk. Mitigation focus: Identify systems running Linux kernel 2.6.28 or earlier.; Apply relevant vendor kernel security updates from your Linux distribution.; Check appliance and virtualization vendor advisories for bundled affected kernels..

Prepared

Jun 28, 2026, 11:23 UTC (UTC+00:00)

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