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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于output_userspace中的属性解析不安全。

CVSS 7.8 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ccb1352e76cff0524e7ccb2074826a092dd13016< 6712dc21506738f5f22b4f68b7c0d9e0df819dbd affected
ccb1352e76cff0524e7ccb2074826a092dd13016< 06b4f110c79716c181a8c5da007c259807840232 affected
ccb1352e76cff0524e7ccb2074826a092dd13016< 47f7f00cf2fa3137d5c0416ef1a71bdf77901395 affected
ccb1352e76cff0524e7ccb2074826a092dd13016< bca8df998cce1fead8cbc69144862eadc2e34c87 affected
ccb1352e76cff0524e7ccb2074826a092dd13016< 0236742bd959332181c1fcc41a05b7b709180501 affected
ccb1352e76cff0524e7ccb2074826a092dd13016< ec334aaab74705cc515205e1da3cb369fdfd93cd affected
ccb1352e76cff0524e7ccb2074826a092dd13016< 4fa672cbce9c86c3efb8621df1ae580d47813430 affected
ccb1352e76cff0524e7ccb2074826a092dd13016< 6beb6835c1fbb3f676aebb51a5fee6b77fed9308 affected
… +10 more rows
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I. Basic Information for CVE-2025-37998

Vulnerability Information
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Vulnerability Title
openvswitch: Fix unsafe attribute parsing in output_userspace()
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于output_userspace中的属性解析不安全。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ccb1352e76cff0524e7ccb2074826a092dd13016 ~ 6712dc21506738f5f22b4f68b7c0d9e0df819dbd -
Linux Linux 3.3 -

II. Public POCs for CVE-2025-37998

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III. Intelligence Information for CVE-2025-37998

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Same Patch Batch · Linux · 2025-05-29 · 7 CVEs total

CVE-2025-37996 8.8 HIGH KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()
CVE-2025-37997 7.8 HIGH netfilter: ipset: fix region locking in hash types
CVE-2025-37999 fs/erofs/fileio: call erofs_onlinefolio_split() after bio_add_folio()
CVE-2025-37995 module: ensure that kobject_put() is safe for module type kobjects
CVE-2025-37994 usb: typec: ucsi: displayport: Fix NULL pointer access
CVE-2025-37993 can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37998

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