ndisc: use RCU protection in ndisc_alloc_skb()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21764
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-27 03:15:17 UTC
Updated2026-07-14 13:17:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from ADP

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

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 de09334b9326632bbf1a74bfd8b01866cbbf2f61 96fc896d0e5b37c12808df797397fb16f3080879 git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1 git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 b870256dd2a5648d5ed2f22316b3ac29a7e5ed63 git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 3c2d705f5adf5d860aaef90cb4211c0fde2ba66d git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 9e0ec817eb41a55327a46cd3ce331a9868d60304 git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 bbec88e4108e8d6fb468d3817fa652140a44ff28 git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 cd1065f92eb7ff21b9ba5308a86f33d1670bf926 git Not specified
CNA Linux Linux affected de09334b9326632bbf1a74bfd8b01866cbbf2f61 628e6d18930bbd21f2d4562228afe27694f66da9 git Not specified
CNA Linux Linux affected 3.9 Not specified
CNA Linux Linux unaffected 3.9 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 V3.1.6 * 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 V3.1.6 * 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 V3.1.6 * 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/bbec88e4108e8d6fb468d3817fa652140a44ff28 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cd1065f92eb7ff21b9ba5308a86f33d1670bf926 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b870256dd2a5648d5ed2f22316b3ac29a7e5ed63 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/628e6d18930bbd21f2d4562228afe27694f66da9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9e0ec817eb41a55327a46cd3ce331a9868d60304 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/3c2d705f5adf5d860aaef90cb4211c0fde2ba66d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1 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/96fc896d0e5b37c12808df797397fb16f3080879 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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