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Red Hat: CVE-2023-52340: kernel: ICMPv6 “Packet Too Big” packets force a DoS of the Linux kernel by forcing 100% CPU (Multiple Advisories)

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Red Hat: CVE-2023-52340: kernel: ICMPv6 “Packet Too Big” packets force a DoS of the Linux kernel by forcing 100% CPU (Multiple Advisories)

Severity
6
CVSS
(AV:A/AC:L/Au:N/C:N/I:N/A:C)
Published
01/22/2024
Created
05/24/2024
Added
05/23/2024
Modified
07/10/2024

Description

The IPv6 implementation in the Linux kernel before 6.3 has a net/ipv6/route.c max_size threshold that can be consumed easily, e.g., leading to a denial of service (network is unreachable errors) when IPv6 packets are sent in a loop via a raw socket.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

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