CVE-2016-8646: The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to caus...

Security readout for executives and security teams

CVE-2016-8646 is a Linux kernel flaw that can let a local user crash the kernel through a hashing socket edge case. The business impact is availability: affected servers could experience denial of service if an attacker already has local execution access. Exposure is most likely on Linux systems running vulnerable kernel code before 4.3.6 or vendor kernels that had not yet received the backported fix. Risk is higher on multi-user systems or hosts allowing untrusted local code execution. Treat this as a standard availability-risk kernel update unless the environment has many untrusted local users or shared compute workloads. It should be remediated through normal kernel patch cycles, with faster action for exposed multi-tenant systems. Mitigation focus: Update affected Linux kernels using vendor-supported security updates.; For upstream kernels, ensure the fix from Linux 4.3.6 or later is present.; Review Red Hat advisories RHSA-2017:1297, RHSA-2017:1298, and RHSA-2017:1308 if applicable..

Prepared

Jun 13, 2026, 13:16 UTC (UTC+00:00)

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