CVE-2016-4486: The rtnl_fill_link_ifmap function in net/core/rtnetlink.c in the Linux kernel before 4.5.5 does not initial...

Security readout for executives and security teams

This is a Linux kernel information disclosure bug. A local user could read a Netlink message and receive data unintentionally copied from kernel stack memory. It is not described as remote code execution, but kernel memory disclosure can matter on shared systems or where untrusted local users exist. Exposure is most relevant to Linux systems running kernels before 4.5.5 or vendor kernels without the backported fix. Risk is higher on multi-user servers, shared hosting, containers with local shell access, or systems where untrusted users can query Netlink. Treat as a patching priority for shared or multi-user Linux environments. It is not shown as actively exploited or remote, but public exploit information and kernel memory exposure make delayed remediation unjustified where local users are present. Mitigation focus: Update Linux kernels using supported vendor security packages.; Confirm the running kernel includes Linux 4.5.5 or the vendor backport.; Review Ubuntu, SUSE, Debian, and Red Hat guidance for affected releases..

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.