CVE-2025-21765

ipv6: use RCU protection in ip6_default_advmss()

State: Published
Severity: 8.1 High
Published: Feb 27, 2025
Updated: Oct 15, 2026
Reserved: Dec 29, 2024

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 78ad057472d8c76e0602402269222f9f9c698790Affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before d02f30d220ef9511568a48dba8a9004c65f8d904Affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 28de355b63ad42309ed5a03ee7c436c90512265bAffected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 84212387caadb211cd9dadd6fd5563bd37dc1f5eAffected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 4176a68b0db8fc74ac14fcd00ba8231371051dc2Affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 713a40c892f40300d63691d9f85b2a23b48fe1e8Affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 550ed693f47370502a71b85382e7f9e6417300b8Affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 3c8ffcd248da34fc41e52a46e51505900115fc2aAffected
LinuxLinux	2.6.26Affected before 2.6.26Not affected 5.4.291 through 5.4.Not affected 5.10.235 through 5.10.Not affected 5.15.179 through 5.15.Not affected 6.1.129 through 6.1.Not affected 6.6.79 through 6.6.Not affected 6.12.16 through 6.12.Not affected 6.13.4 through 6.13.*Not affected 6.14 and laterNot affected

Product

Versions

LinuxLinux

5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 78ad057472d8c76e0602402269222f9f9c698790Affected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before d02f30d220ef9511568a48dba8a9004c65f8d904Affected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 28de355b63ad42309ed5a03ee7c436c90512265bAffected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 84212387caadb211cd9dadd6fd5563bd37dc1f5eAffected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 4176a68b0db8fc74ac14fcd00ba8231371051dc2Affected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 713a40c892f40300d63691d9f85b2a23b48fe1e8Affected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 550ed693f47370502a71b85382e7f9e6417300b8Affected
5578689a4e3c04f2d43ea39736fd3fa396d80c6e to before 3c8ffcd248da34fc41e52a46e51505900115fc2aAffected

LinuxLinux

2.6.26Affected
before 2.6.26Not affected
5.4.291 through 5.4.*Not affected
5.10.235 through 5.10.*Not affected
5.15.179 through 5.15.*Not affected
6.1.129 through 6.1.*Not affected
6.6.79 through 6.6.*Not affected
6.12.16 through 6.12.*Not affected
6.13.4 through 6.13.*Not affected
6.14 and laterNot affected

References

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