ipv6: use RCU protection in ip6_default_advmss()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21765
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-27 03:15:17 UTC
Updated2026-07-14 13:17:23 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU protection in ip6_default_advmss() ip6_default_advmss() needs rcu protection to make sure the net structure it reads does not disappear.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 78ad057472d8c76e0602402269222f9f9c698790 git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e d02f30d220ef9511568a48dba8a9004c65f8d904 git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 28de355b63ad42309ed5a03ee7c436c90512265b git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 84212387caadb211cd9dadd6fd5563bd37dc1f5e git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 4176a68b0db8fc74ac14fcd00ba8231371051dc2 git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 713a40c892f40300d63691d9f85b2a23b48fe1e8 git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 550ed693f47370502a71b85382e7f9e6417300b8 git Not specified
CNA Linux Linux affected 5578689a4e3c04f2d43ea39736fd3fa396d80c6e 3c8ffcd248da34fc41e52a46e51505900115fc2a git Not specified
CNA Linux Linux affected 2.6.26 Not specified
CNA Linux Linux unaffected 2.6.26 semver Not specified
CNA Linux Linux unaffected 5.4.291 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.235 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.179 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.129 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.79 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.16 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.4 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/05/msg00030.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/4176a68b0db8fc74ac14fcd00ba8231371051dc2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/84212387caadb211cd9dadd6fd5563bd37dc1f5e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/550ed693f47370502a71b85382e7f9e6417300b8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/78ad057472d8c76e0602402269222f9f9c698790 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d02f30d220ef9511568a48dba8a9004c65f8d904 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3c8ffcd248da34fc41e52a46e51505900115fc2a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/713a40c892f40300d63691d9f85b2a23b48fe1e8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/28de355b63ad42309ed5a03ee7c436c90512265b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00028.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
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