Date: Tue, 14 Aug 2018 16:30:51 -0400 (EDT) From: Vladis Dronov <vdronov@...hat.com> To: oss-security@...ts.openwall.com Subject: CVE-2018-5391: Linux kernel: IP fragments with random offsets allow a remote denial of service (FragmentSmack) Heololo, A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment reassembly algorithms by sending specially crafted packets which could lead to a CPU saturation and hence a denial of service on the system. External References: https://www.kb.cert.org/vuls/id/641765 https://access.redhat.com/articles/3553061 https://bugzilla.redhat.com/show_bug.cgi?id=1609664 Best regards, Vladis Dronov | Red Hat, Inc. | Product Security Engineer
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