In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff cve-icon cve-icon
https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45 cve-icon cve-icon
https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d cve-icon cve-icon
https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184 cve-icon cve-icon
https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025032711-CVE-2023-53000-fded@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53000 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53000 cve-icon
History

Fri, 04 Apr 2025 03:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-401 CWE-129
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'}

threat_severity

Important

 cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

threat_severity

Low

Wed, 02 Apr 2025 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-401
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'}

Fri, 28 Mar 2025 13:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important

Thu, 27 Mar 2025 17:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.
Title netlink: prevent potential spectre v1 gadgets
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-03-27T16:43:33.208Z

Updated: 2025-05-04T07:47:15.178Z

Reserved: 2025-03-27T16:40:15.742Z

Link: CVE-2023-53000

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-03-27T17:15:48.810

Modified: 2025-03-28T18:11:40.180

Link: CVE-2023-53000

cve-icon Redhat

Severity : Low

Publid Date: 2025-03-27T00:00:00Z

Links: CVE-2023-53000 - Bugzilla