CVE-2023-52340

high

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.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-15

https://security.netapp.com/advisory/ntap-20240816-0005/

https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=af6d10345ca76670c1b7c37799f0d5576ccef277

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3

Details

Source: Mitre, NVD

Published: 2024-07-05

Updated: 2025-11-04

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H