CVE-2016-9313: security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in con...

Security readout for executives and security teams

CVE-2016-9313 is a Linux kernel flaw in the big_key key type. A local user could crash an affected system through a crafted application, causing a denial of service. The sources identify Linux kernels before 4.8.7 and do not show active exploitation. Exposure is mainly Linux systems running kernels before 4.8.7 or vendor kernels lacking the backported fix. Practical risk depends on whether untrusted local users or applications can execute code on the host. Treat this as a targeted availability risk, not a confirmed internet-scale emergency. Patch affected Linux systems through normal kernel maintenance, with higher urgency for shared or multi-tenant environments where local users are less trusted. Mitigation focus: Upgrade to Linux kernel 4.8.7 or a vendor backport containing the upstream fix.; Check distribution advisories for fixed kernel package versions.; Limit untrusted local user and application execution on unpatched systems..

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.