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CVE-2025-40158ipv6: use RCU in ip6_output()
- 8.1HighCVSS base score
- 0.56%Exploitation in 30 daysEPSS · top 53% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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().
Timeline
ID reserved
By Linux
- 7 months later
· 7 months later
Published
- 12 months later
· 12 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
- affected 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 – < 4549ce1057363c8dc072f40c6aa591c279eafed2
- affected 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 – < 423895685f367b5a0a956bd14b02df0192bded4c
- affected 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 – < 92803b826e40e49a5e8a6e208f4b4574e9d19426
- affected 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 – < 0393f85c3241c19ba8550f04a812e7d19f6b3082
- affected 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 – < 11709573cc4e48dc34c80fc7ab9ce5b159e29695
- affected 4.13
- unaffected < 4.13
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.17.3 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References5
- https://git.kernel.org/stable/c/4549ce1057363c8dc072f40c6aa591c279eafed2 (opens in a new tab)
- https://git.kernel.org/stable/c/423895685f367b5a0a956bd14b02df0192bded4c (opens in a new tab)
- https://git.kernel.org/stable/c/92803b826e40e49a5e8a6e208f4b4574e9d19426 (opens in a new tab)
- https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082 (opens in a new tab)
- https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-124925 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40158)Record last updated .