In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a 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:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/022cac1c693add610ae76ede03adf4d9d5a2cf21 cve-icon cve-icon
https://git.kernel.org/stable/c/20a3489b396764cc9376e32a9172bee26a89dc3b cve-icon cve-icon
https://git.kernel.org/stable/c/5bb4228c32261d06e4fbece37ec3828bcc005b6b cve-icon cve-icon
https://git.kernel.org/stable/c/6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e cve-icon cve-icon
https://git.kernel.org/stable/c/6d0ce46a93135d96b7fa075a94a88fe0da8e8773 cve-icon cve-icon
https://git.kernel.org/stable/c/7b81425b517accefd46bee854d94954f5c57e019 cve-icon cve-icon
https://git.kernel.org/stable/c/c40cb5c03e37552d6eff963187109e2c3f78ef6f cve-icon cve-icon
https://git.kernel.org/stable/c/c7574740be8ce68a57d0aece24987b9be2114c3c cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025022609-CVE-2025-21791-6074@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-21791 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-21791 cve-icon
History

Thu, 13 Mar 2025 22:15:00 +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: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.
Title vrf: use RCU protection in l3mdev_l3_out()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-27T02:18:29.014Z

Updated: 2025-03-24T15:40:27.744Z

Reserved: 2024-12-29T08:45:45.766Z

Link: CVE-2025-21791

cve-icon Vulnrichment

Updated: 2025-02-27T17:57:17.808Z

cve-icon NVD

Status : Analyzed

Published: 2025-02-27T03:15:19.970

Modified: 2025-03-13T21:53:49.573

Link: CVE-2025-21791

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2025-21791 - Bugzilla