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().
SeverityHigh
CVSS8.1
Exploit probability—
Product
Linux
PublishedNov 12, 2025
First seenNov 12, 2025
How to fix
Update
- Linux Linux4549ce1057363c8dc072f40c6aa591c279eafed2, 423895685f367b5a0a956bd14b02df0192bded4c, 92803b826e40e49a5e8a6e208f4b4574e9d19426, 0393f85c3241c19ba8550f04a812e7d19f6b3082, 11709573cc4e48dc34c80fc7ab9ce5b159e29695 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 ≤ v < 4549ce1057363c8dc072f40c6aa591c279eafed2, 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 ≤ v < 423895685f367b5a0a956bd14b02df0192bded4c, 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 ≤ v < 92803b826e40e49a5e8a6e208f4b4574e9d19426, 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 ≤ v < 0393f85c3241c19ba8550f04a812e7d19f6b3082, 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 ≤ v < 11709573cc4e48dc34c80fc7ab9ce5b159e29695, 4.13 | 4549ce1057363c8dc072f40c6aa591c279eafed2, 423895685f367b5a0a956bd14b02df0192bded4c, 92803b826e40e49a5e8a6e208f4b4574e9d19426, 0393f85c3241c19ba8550f04a812e7d19f6b3082, 11709573cc4e48dc34c80fc7ab9ce5b159e29695 |
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