CVE-2025-37998: openvswitch: Fix unsafe attribute parsing in output_userspace()

Published May 29, 2025
·
Updated

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

openvswitch: Fix unsafe attribute parsing in outputuserspace()

This patch replaces the manual Netlink attribute iteration in outputuserspace() with nlaforeachnested(), which ensures that only well-formed attributes are processed.

Affected Software

17 affected componentsFixes available
Linux Kernel
Open vSwitch Open vSwitch
Linux Linux kernel>=3.3<5.4.294
Linux Linux kernel>=5.5<5.10.238
Linux Linux kernel>=5.11<5.15.183
Linux Linux kernel>=5.16<6.1.139
Linux Linux kernel>=6.2<6.6.91
Linux Linux kernel>=6.7<6.12.29
Linux Linux kernel>=6.13<6.14.7
Linux Linux kernel=6.15-rc1
Linux Linux kernel=6.15-rc2
Linux Linux kernel=6.15-rc3
Linux Linux kernel=6.15-rc4
Linux Linux kernel=6.15-rc5
Debian Debian Linux=11.0
Microsoft azl3 kernel 6.6.85.1-4
Microsoft azl3 kernel 6.6.92.2-1

Event History

May 29, 2025
CVE Published
via MITRE·01:15 PM
Data Sourced
via MITRE·01:15 PM
DescriptionSeverity
Data Sourced
via NVD·02:15 PM
RemedyDescriptionSeverityAffected Software
Jul 11, 2025
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·07:00 AM
Affected Software
Updated
via Microsoft·07:00 AM
SeverityAffected Software
Updated
via Microsoft·07:00 AM
DescriptionSeverity

Frequently Asked Questions

1

What is the severity of CVE-2025-37998?

CVE-2025-37998 has been classified as having a medium severity level due to potential exploitation risks.

2

How do I fix CVE-2025-37998?

To fix CVE-2025-37998, update the Linux kernel or Open vSwitch to the latest version where the vulnerability has been patched.

3

What software is affected by CVE-2025-37998?

CVE-2025-37998 affects the Linux kernel and Open vSwitch implementations.

4

Is CVE-2025-37998 exploitable remotely?

CVE-2025-37998 can potentially be exploited locally, as it involves unsafe attribute parsing in specific user-space interactions.

5

What are the implications of CVE-2025-37998?

The implications of CVE-2025-37998 include possible denial of service or unauthorized access due to incorrect handling of Netlink attributes.

Contact

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