CVE-2025-37755Network attack vector

Remote kernel crash via unchecked page allocation

Published May 1, 2025 · Updated Aug 5, 2026

NULL pointer dereference in the Linux kernel allows remote attackers to crash affected systems by sending network traffic. In wx_alloc_mapped_page, page_pool_dev_alloc_pages can return NULL, but the driver passes that page to page_pool_get_dma_addr without rejecting it. The receive-buffer refill path is exposed on ngbe or txgbe interfaces, and sustained traffic can drive the required page-allocation failure.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel allows remote attackers to crash affected systems by sending network traffic. In wx_alloc_mapped_page, page_pool_dev_alloc_pages can return NULL, but the driver passes that page to page_pool_get_dma_addr without rejecting it. The receive-buffer refill path is exposed on ngbe or txgbe interfaces, and sustained traffic can drive the required page-allocation failure.

The record

CVE
CVE-2025-37755
Published
May 1, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3c47e8ae113a68da47987750d9896e325d0aeedd <1dd13c60348f515acd8c6f25a561b9c4e3b04fea
  2. Affected versionversion=3c47e8ae113a68da47987750d9896e325d0aeedd <7f1ff1b38a7c8b872382b796023419d87d78c47e
  3. Affected versionversion=3c47e8ae113a68da47987750d9896e325d0aeedd <90bec7cef8805f9a23145e070dff28a02bb584eb
  4. Affected versionversion=3c47e8ae113a68da47987750d9896e325d0aeedd <ad81d666e114ebf989fc9994d4c93d451dc60056
  5. Affected versionversion=3c47e8ae113a68da47987750d9896e325d0aeedd <c17ef974bfcf1a50818168b47c4606b425a957c4
  6. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3c47e8ae113a68da47987750d9896e325d0aeedd <1dd13c60348f515acd8c6f25a561b9c4e3b04fea; version=3c47e8ae113a68da47987750d9896e325d0aeedd <7f1ff1b38a7c8b872382b796023419d87d78c47e; version=3c47e8ae113a68da47987750d9896e325d0aeedd <90bec7cef8805f9a23145e070dff28a02bb584eb; version=3c47e8ae113a68da47987750d9896e325d0aeedd <ad81d666e114ebf989fc9994d4c93d451dc60056; version=3c47e8ae113a68da47987750d9896e325d0aeedd <c17ef974bfcf1a50818168b47c4606b425a957c4; version=6.3

Published CVSS scores

7.5Linux CVE TeamCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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