In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and 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

No data.

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/04e05112f10354ffc3bb6cc796d553bab161594c cve-icon cve-icon
https://git.kernel.org/stable/c/789230e5a8c1097301afc802e242c79bc8835c67 cve-icon cve-icon
https://git.kernel.org/stable/c/a9319d800b5701e7f5e3fa71a5b7c4831fc20d6d cve-icon cve-icon
https://git.kernel.org/stable/c/ae38982f521621c216fc2f5182cd091f4734641d cve-icon cve-icon
https://git.kernel.org/stable/c/ed6ae1f325d3c43966ec1b62ac1459e2b8e45640 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21760-fb9d@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-21760 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-21760 cve-icon
History

Wed, 05 Mar 2025 04:30:00 +0000

Type Values Removed Values Added
Metrics threat_severity

Important

 threat_severity

Moderate

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

Important

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: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF.
Title ndisc: extend RCU protection in ndisc_send_skb()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-27T02:18:13.496Z

Updated: 2025-02-27T18:02:27.327Z

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

Link: CVE-2025-21760

cve-icon Vulnrichment

Updated: 2025-02-27T17:57:41.960Z

cve-icon NVD

Status : Received

Published: 2025-02-27T03:15:16.653

Modified: 2025-02-27T18:15:29.127

Link: CVE-2025-21760

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2025-21760 - Bugzilla