CVE-2015-1421: Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel...

Security readout for executives and security teams

CVE-2015-1421 is a Linux kernel SCTP flaw that can let a remote attacker crash affected systems by triggering a connection setup collision. The sources describe denial of service through memory corruption and only say other impact may be possible. No active exploitation is cited in the supplied sources, and CISA KEV is false. Exposure is most likely on systems running affected Linux kernels with SCTP reachable or enabled. Internet-facing SCTP services, telecom-style workloads, and appliances using older vendor kernels deserve priority review. Distribution kernels may be fixed by backport even when their version string is older than 3.18.8. Treat this as a targeted availability risk, not a broadly proven emergency. Patch exposed or business-critical Linux systems promptly, especially if SCTP is in use. Older unsupported systems should be prioritized because vendor backports may be unavailable or hard to verify. Mitigation focus: Apply kernel updates from the relevant Linux distribution advisory.; Confirm the installed kernel includes the upstream fix or vendor backport.; Follow vendor guidance for package-specific fixed versions and reboot requirements..

Prepared

Jun 14, 2026, 05:11 UTC (UTC+00:00)

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