Bug 2363315 (CVE-2025-37789)

Summary:	CVE-2025-37789 kernel: Linux kernel (openvswitch): Denial of Service and limited data exposure via improper key length validation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's openvswitch virtual environment. A local attacker with low privileges could exploit improper data and key length validation in the `set()` action. This could lead to a denial of service, making the system unresponsive, and potentially result in limited information disclosure.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-05-01 14:03:29 UTC

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

net: openvswitch: fix nested key length validation in the set() action

It's not safe to access nla_len(ovs_key) if the data is smaller than
the netlink header.  Check that the attribute is OK first.

Comment 1 Avinash Hanwate 2025-05-02 04:06:19 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050119-CVE-2025-37789-3f0b@gregkh/T

Comment 4 errata-xmlrpc 2026-01-26 14:09:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:1194 https://access.redhat.com/errata/RHSA-2026:1194

Comment 5 errata-xmlrpc 2026-01-26 16:23:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:1236 https://access.redhat.com/errata/RHSA-2026:1236

Comment 6 errata-xmlrpc 2026-01-28 00:22:18 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1443 https://access.redhat.com/errata/RHSA-2026:1443

Comment 7 errata-xmlrpc 2026-01-28 00:29:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1441 https://access.redhat.com/errata/RHSA-2026:1441

Comment 8 errata-xmlrpc 2026-01-28 00:36:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:1444 https://access.redhat.com/errata/RHSA-2026:1444

Comment 9 errata-xmlrpc 2026-01-28 15:04:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:1495 https://access.redhat.com/errata/RHSA-2026:1495

Comment 10 errata-xmlrpc 2026-01-28 15:08:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:1494 https://access.redhat.com/errata/RHSA-2026:1494

Comment 12 errata-xmlrpc 2026-02-09 02:13:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2212 https://access.redhat.com/errata/RHSA-2026:2212