CVE-2016-9793: The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative value...

Security readout for executives and security teams

This Linux kernel flaw can let someone already on a system, with network-administration capability, crash that system. It is mainly an availability risk, not a remote internet-facing issue, but it matters for shared servers, containers, and environments granting elevated network privileges. Potential exposure is Linux kernels before 4.8.14, or vendor kernels without the relevant backport. Practical risk is highest where local users, services, or containers receive CAP_NET_ADMIN. Systems without local untrusted access or that tightly restrict this capability have lower exposure. Prioritize patching for shared Linux hosts, container platforms, and systems granting network-admin capabilities. This is not evidenced as remotely exploited, but kernel crash risk can affect service availability and tenant isolation. Mitigation focus: Update to Linux kernel 4.8.14 or a vendor kernel containing the fix.; Apply relevant vendor advisories, such as Red Hat RHSA-2017:0931, RHSA-2017:0932, or RHSA-2017:0933.; Restrict CAP_NET_ADMIN to only trusted workloads and administrators..

Prepared

Jun 13, 2026, 12:51 UTC (UTC+00:00)

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