CVE-2025-21765

medium

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU protection in ip6_default_advmss() ip6_default_advmss() needs rcu protection to make sure the net structure it reads does not disappear.

References

References
More

https://cert-portal.siemens.com/productcert/html/ssa-019113.html

https://www.cisa.gov/news-events/ics-advisories/icsa-25-162-05

https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

https://git.kernel.org/stable/c/d02f30d220ef9511568a48dba8a9004c65f8d904

https://git.kernel.org/stable/c/84212387caadb211cd9dadd6fd5563bd37dc1f5e

https://git.kernel.org/stable/c/78ad057472d8c76e0602402269222f9f9c698790

https://git.kernel.org/stable/c/713a40c892f40300d63691d9f85b2a23b48fe1e8

https://git.kernel.org/stable/c/550ed693f47370502a71b85382e7f9e6417300b8

https://git.kernel.org/stable/c/4176a68b0db8fc74ac14fcd00ba8231371051dc2

https://git.kernel.org/stable/c/3c8ffcd248da34fc41e52a46e51505900115fc2a

https://git.kernel.org/stable/c/28de355b63ad42309ed5a03ee7c436c90512265b

https://cert-portal.siemens.com/productcert/html/ssa-265688.html

https://cert-portal.siemens.com/productcert/html/ssa-082556.html

Details

Source: Mitre, NVD

Published: 2025-02-27

Updated: 2026-07-30

Risk Information

CVSS v2

Base Score: 4.6

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

Severity: Medium

CVSS v3

Base Score: 5.5

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