CVE-2025-21764

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-21764
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21764.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21764
Downstream
Related
Published
2025-02-27T02:18:15.598Z
Modified
2025-11-27T02:32:27.581131Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ndisc: use RCU protection in ndisc_alloc_skb()
Details

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

ndisc: use RCU protection in ndiscallocskb()

ndiscallocskb() can be called without RTNL or RCU being held.

Add RCU protection to avoid possible UAF.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/blob/cc431b3424123d84bcd7afd4de150b33f117a8ef/cves/2025/21xxx/CVE-2025-21764.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
96fc896d0e5b37c12808df797397fb16f3080879
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
b870256dd2a5648d5ed2f22316b3ac29a7e5ed63
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
3c2d705f5adf5d860aaef90cb4211c0fde2ba66d
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
9e0ec817eb41a55327a46cd3ce331a9868d60304
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
bbec88e4108e8d6fb468d3817fa652140a44ff28
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
cd1065f92eb7ff21b9ba5308a86f33d1670bf926
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
de09334b9326632bbf1a74bfd8b01866cbbf2f61
Fixed
628e6d18930bbd21f2d4562228afe27694f66da9

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.9.0
Fixed
5.4.291
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.235
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.179
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.129
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.79
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.16
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.13.4