In the Linux kernel, the following vulnerability has been resolved:

ipv6: use RCU in ip6_xmit()

Use RCU in ip6_xmit() in order to use dst_dev_rcu() to prevent
possible UAF.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00027.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 affected < f7f9e924f23684b4b23cd9f976cceab24a968e34
4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 affected < 9085e56501d93af9f2d7bd16f7fcfacdde47b99c
Linux Linux affected
Version Status Constraints
4.13 affected —
0 unaffected < 4.13
6.17.3 unaffected ≤ 6.17.*
6.18 unaffected ≤ *

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/9085e56501d93af9f2d7bd16f7fcfacdde47b99c cve-icon cve-icon
https://git.kernel.org/stable/c/f7f9e924f23684b4b23cd9f976cceab24a968e34 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025111255-CVE-2025-40135-67ca@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-40135 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-40135 cve-icon
History

Mon, 01 Dec 2025 06:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Fri, 14 Nov 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Wed, 12 Nov 2025 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 12 Nov 2025 10:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6_xmit() Use RCU in ip6_xmit() in order to use dst_dev_rcu() to prevent possible UAF.
Title ipv6: use RCU in ip6_xmit()
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-01T06:18:42.191Z

Reserved: 2025-04-16T07:20:57.170Z

Link: CVE-2025-40135

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-12T11:15:43.220

Modified: 2025-11-12T16:19:12.850

Link: CVE-2025-40135

cve-icon Redhat

Severity : Important

Publid Date: 2025-11-12T00:00:00Z

Links: CVE-2025-40135 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-11-12T22:12:30Z

Weaknesses

No weakness.