CVE-2009-1388: The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneo...

Security readout for executives and security teams

CVE-2009-1388 is an old Linux kernel flaw that can let a local user freeze affected systems through a kernel deadlock. It is not a remote takeover issue in the provided sources, but it can affect availability on legacy hosts where untrusted users or workloads can run code. Most exposure is likely limited to legacy Linux environments, especially systems still running vendor kernels tied to Linux 2.6.18 or advisories referencing this CVE. Confirm against vendor security errata and OVAL definitions because the bundle lists affected product data as n/a. Treat this as a legacy availability risk, not an internet-facing emergency based on the supplied evidence. Prioritize remediation where outdated Linux kernels support shared users, hosted workloads, or critical services that cannot tolerate local denial of service. Mitigation focus: Identify systems running legacy Linux 2.6.18-derived kernels.; Check Red Hat, VMware, and distribution advisories for CVE-2009-1388 coverage.; Apply the relevant vendor kernel or platform updates where applicable..

Prepared

Jun 28, 2026, 10:45 UTC (UTC+00:00)

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