CVE-2015-2686: net/socket.c in the Linux kernel 3.19 before 3.19.3 does not validate certain range data for (1) sendto and...

Security readout for executives and security teams

CVE-2015-2686 is a Linux kernel flaw where local users could gain higher privileges through insufficient validation in sendto and recvfrom handling. It affected Linux kernel 3.19 before 3.19.3. Business urgency is highest for systems that allow local shell access, shared hosting, or untrusted local workloads. Exposure is likely limited to systems running Linux kernel 3.19 before 3.19.3 or vendor kernels that did not backport the fix. Internet-facing services alone are not enough; the attacker needs local user capability or code execution on the host. Prioritize remediation where affected kernels run on systems with local users or untrusted workloads. This is not a remote-only perimeter issue, but successful exploitation could turn limited local access into elevated control of the host. Mitigation focus: Upgrade to Linux 3.19.3 or a vendor kernel containing the upstream fix.; Check vendor advisories for backported fixes before relying only on version strings.; Prioritize shared, multi-user, build, bastion, and workload-hosting systems..

Prepared

Jun 13, 2026, 14:44 UTC (UTC+00:00)

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