CVE-2009-1337: The exit_notify function in kernel/exit.c in the Linux kernel before 2.6.30-rc1 does not restrict exit sign...

Security readout for executives and security teams

CVE-2009-1337 is an old Linux kernel flaw where a local user could abuse process-exit signaling behavior to send an unintended signal to another process. The issue is fixed upstream before Linux 2.6.30-rc1, but the provided sources do not include CVSS scoring or evidence of active exploitation. Exposure is most likely on legacy Linux systems, appliances, or virtualization service consoles using kernels older than the fixed upstream boundary or unpatched vendor kernels. Modern maintained Linux distributions are unlikely to remain affected, but unsupported embedded or frozen systems should be checked. Treat this as a legacy-platform risk, not a current internet-facing emergency based on the supplied evidence. Prioritize environments still running old Linux kernels, unsupported appliances, or ESX service-console-era systems, because local kernel flaws can undermine host isolation and operational reliability. Mitigation focus: Identify systems running Linux kernels before 2.6.30-rc1 or affected vendor builds.; Apply the relevant vendor kernel security update where available.; Check vendor advisories for distribution-specific package names and fixed versions..

Prepared

Jun 28, 2026, 11:04 UTC (UTC+00:00)

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