CVE-2025-40158

CVE-2025-40158

High · published November 12, 2025

CVSS v3.1
8.1
EPSS
1%
Percentile
44.7
In the wild
Unconfirmed
What it is

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().

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00541 · 44.7th percentile
Published
2025-11-12T16:15Z
References (4)
https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/423895685f367b5a0a956bd14b02df0192bded4c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92803b826e40e49a5e8a6e208f4b4574e9d19426 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 12 NOV 10:23Z
    ipv6: use RCU in ip6_output()
    cvelistv5