CVE-2025-40158

high

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6_output() Use RCU in ip6_output() in order to use dst_dev_rcu() to prevent possible UAF. We can remove rcu_read_lock()/rcu_read_unlock() pairs from ip6_finish_output2().

References

https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695

https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082

Details

Source: Mitre, NVD

Published: 2025-11-12

Updated: 2026-07-30

Risk Information

CVSS v2

Base Score: 7.6

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

Severity: High

CVSS v3

Base Score: 8.1

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

Severity: High

EPSS

EPSS: 0.00018