FKIE_CVE-2025-40158
Vulnerability from fkie_nvd - Published: 2025-11-12 11:15 - Updated: 2026-10-30 13:18
Severity
Summary
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().
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/ipv6/ip6_output.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "4549ce1057363c8dc072f40c6aa591c279eafed2",
"status": "affected",
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
"versionType": "git"
},
{
"lessThan": "423895685f367b5a0a956bd14b02df0192bded4c",
"status": "affected",
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
"versionType": "git"
},
{
"lessThan": "92803b826e40e49a5e8a6e208f4b4574e9d19426",
"status": "affected",
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
"versionType": "git"
},
{
"lessThan": "0393f85c3241c19ba8550f04a812e7d19f6b3082",
"status": "affected",
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
"versionType": "git"
},
{
"lessThan": "11709573cc4e48dc34c80fc7ab9ce5b159e29695",
"status": "affected",
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/ipv6/ip6_output.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.13"
},
{
"lessThan": "4.13",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.191",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: use RCU in ip6_output()\n\nUse RCU in ip6_output() in order to use dst_dev_rcu() to prevent\npossible UAF.\n\nWe can remove rcu_read_lock()/rcu_read_unlock() pairs\nfrom ip6_finish_output2()."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nipv6: usar RCU en ip6_output()\n\nUsar RCU en ip6_output() para usar dst_dev_rcu() para prevenir posible UAF.\n\nPodemos eliminar los pares rcu_read_lock()/rcu_read_unlock() de ip6_finish_output2()."
}
],
"id": "CVE-2025-40158",
"lastModified": "2026-10-30T13:18:13.970",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-40158",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T20:00:29.008533Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-11-12T11:15:45.897",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/423895685f367b5a0a956bd14b02df0192bded4c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4549ce1057363c8dc072f40c6aa591c279eafed2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/92803b826e40e49a5e8a6e208f4b4574e9d19426"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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