In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

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.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe cve-icon cve-icon
https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3 cve-icon cve-icon
https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd cve-icon cve-icon
https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431 cve-icon cve-icon
https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44 cve-icon cve-icon
https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a cve-icon cve-icon
https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3 cve-icon cve-icon
https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html cve-icon
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html cve-icon
https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21762-8b8d@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-21762 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-21762 cve-icon
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Fri, 21 Mar 2025 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Thu, 13 Mar 2025 12:30:00 +0000

Type Values Removed Values Added
References

Tue, 04 Mar 2025 03:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 28 Feb 2025 02:00:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 27 Feb 2025 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Thu, 27 Feb 2025 02:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.
Title arp: use RCU protection in arp_xmit()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-27T02:18:14.600Z

Updated: 2025-11-03T19:37:11.540Z

Reserved: 2024-12-29T08:45:45.761Z

Link: CVE-2025-21762

cve-icon Vulnrichment

Updated: 2025-11-03T19:37:11.540Z

cve-icon NVD

Status : Modified

Published: 2025-02-27T03:15:16.857

Modified: 2025-11-03T20:17:15.677

Link: CVE-2025-21762

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-02-27T00:00:00Z

Links: CVE-2025-21762 - Bugzilla