CVE-2017-11176: The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry...

Security readout for executives and security teams

CVE-2017-11176 is a Linux kernel memory safety bug in mq_notify. A local attacker could trigger a use-after-free during Netlink socket close handling, causing a system crash and possibly other unspecified impact. Public exploit material is referenced, but the bundle does not show known active exploitation. Exposure is most likely on Linux systems running kernels through 4.11.9 or downstream distribution kernels before their Debian or Red Hat security updates. Appliances bundling affected kernels may also be exposed, as indicated by the StruxureWare Data Center Expert security-fix reference. Treat this as a high-priority kernel update for multi-user, shared, or appliance-backed environments. The main business risk is service outage from kernel crash, with uncertainty around broader impact. Internet-facing urgency is lower unless attackers already have local execution paths. Mitigation focus: Apply the relevant Debian, Red Hat, or vendor kernel security update.; For appliances, check the vendor advisory and install the fixed firmware or platform release.; Prioritize shared Linux hosts where untrusted users or workloads can run code..

Prepared

Jun 13, 2026, 04:25 UTC (UTC+00:00)

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