Summary

Security Advisory ID : BSA-2018-686

Component : Kernel

Revision : 1.0: Final

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and
tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service. An attacker can induce a denial of service condition by sending specially modified packets within ongoing TCP sessions. Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open port. Thus, the attacks cannot be performed using spoofed IP addresses. A remote attacker may be able to trigger a denial-of-service condition against a system with an available open port. More information at: https://www.kb.cert.org/vuls/id/962459

Affected Products
No Brocade Fibre Channel technology products from Broadcom are currently known to be affected by this vulnerability.

Note

Revision History

Version	Change	Date
1.0	Initial Publication	August 6, 2018