CVE-2016-1583: The ecryptfs_privileged_open function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows loca...

Security readout for executives and security teams

This is an old Linux kernel eCryptfs flaw that could let a local user raise privileges or crash a system. It matters most on multi-user Linux hosts, shared servers, and legacy systems that still run kernels predating the vendor fixes or Linux 4.6.3. Exposure is local, not remote. Systems are most exposed where untrusted or lower-privileged users can log in, run workloads, or execute code on Linux hosts with affected eCryptfs kernel code. Vendor kernels may have backported fixes, so package advisory status matters more than upstream version alone. Prioritize remediation on legacy or shared Linux infrastructure. The risk is not remotely reachable by itself, but successful local exploitation could convert limited access into higher privileges or disrupt system availability. Mitigation focus: Apply the relevant vendor kernel update from Ubuntu, SUSE, Red Hat, or your Linux distributor.; Reboot systems after kernel updates so the fixed kernel is actually running.; For upstream kernels, move to Linux 4.6.3 or a later fixed kernel line..

Prepared

Jun 13, 2026, 14:22 UTC (UTC+00:00)

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