What is CVE-2025-37998?

CVE-2025-37998 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.3 onward and patched in 5.4.294, 5.10.238, 5.15.183 and others. CVE-2025-37998 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37998?

CVE-2025-37998 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-37998?

Yes, CVE-2025-37998 has been patched. Fixed versions include 5.4.294, 5.10.238, 5.15.183 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-37998 actively exploited?

CVE-2025-37998 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-37998

Medium

In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix unsafe attribute parsing in output_userspace() This patch replaces the manual Netlink attribute iteration in output_userspace() with nla_for_each_nested(), which ensures that only well-formed attributes are processed.

Package Linux Kernel

Published 2025-05-29

Last modified 2025-12-16

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 3.3 and later are affected. Fixed in 5.4.294, 5.10.238, 5.15.183, 6.1.139, 6.6.91, 6.12.29, 6.14.7, 6.15 and their respective stable series.

Affected from

≥ 3.3

Fixed in

✓ 5.4.294 5.4.x ✓ 5.10.238 5.10.x ✓ 5.15.183 5.15.x ✓ 6.1.139 6.1.x ✓ 6.6.91 6.6.x ✓ 6.12.29 6.12.x ✓ 6.14.7 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37998 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Zerodayinitiative
https://www.zerodayinitiative.com/advisories/ZDI-25-307/

Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html

Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/0236742bd959332181c1fcc41a05b7b709180501
Patch
Kernel patch commit
https://git.kernel.org/stable/c/06b4f110c79716c181a8c5da007c259807840232
Patch
Kernel patch commit
https://git.kernel.org/stable/c/47f7f00cf2fa3137d5c0416ef1a71bdf77901395
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2025-37998

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-29

Modified 2025-12-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-37998?

CVE-2025-37998 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.3 onward and has been patched in 5.4.294, 5.10.238, 5.15.183 and others. CVE-2025-37998 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37998?

CVE-2025-37998 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-37998?

Yes — CVE-2025-37998 has been patched. Fixed versions include 5.4.294, 5.10.238, 5.15.183 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-37998 actively exploited?

No — CVE-2025-37998 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.