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CVE-2025-40158

8.1 high SSVC exploitation: none Deferred
NVD · CVE.org

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().

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. References+1 references (now 4)NVD modified 2026-10-21 13:18
  2. First seenCVSS 8.1NVD modified 2026-10-15 11:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4