CVE-2013-1763: Array index error in the __sock_diag_rcv_msg function in net/core/sock_diag.c in the Linux kernel before 3....

Security readout for executives and security teams

CVE-2013-1763 is a Linux kernel local privilege escalation issue. A logged-in local user could abuse malformed Netlink socket diagnostic input to gain higher privileges on kernels before the fix. It is most urgent for legacy Linux systems, shared hosts, or machines running untrusted local workloads. Exposure is likely limited to old or vendor-unpatched Linux kernels before 3.7.10, including distribution kernels that had not backported the fix. Internet exposure is not the main issue; this requires local user capability. Treat as high priority only where legacy Linux kernels remain. The business risk is local compromise becoming full host compromise, not direct remote entry. Modern patched systems should have low residual risk. Mitigation focus: Update affected Linux kernels using vendor security advisories.; Confirm the running kernel includes the upstream sock_diag bounds-check fix.; Prioritize multi-user systems and hosts running untrusted local workloads..

Prepared

Jun 24, 2026, 11:46 UTC (UTC+00:00)

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