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Status published
Unknown
CVE-2025-40158
ipv6: use RCU in ip6_output()
Vulnerability 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().
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Linux
View all reports →Affected Software
Linux
Vulnerable Versions:
4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36, 4.13, 0, 6.17.3, 6.18
Timeline
Official Publish:
November 12th, 2025
Last Modified:
June 16th, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.