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redhatcveRedhat.comRH:CVE-2018-5390
HistoryMar 20, 2021 - 9:44 p.m.

CVE-2018-5390

2021-03-2021:44:35
redhat.com
access.redhat.com
25

EPSS

0.783

Percentile

98.3%

A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. 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.