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CVE-2025-40053
net: dlink: handle copy_thresh allocation failure
Description

In the Linux kernel, the following vulnerability has been resolved: net: dlink: handle copy_thresh allocation failure The driver did not handle failure of `netdev_alloc_skb_ip_align()`. If the allocation failed, dereferencing `skb->protocol` could lead to a NULL pointer dereference. This patch tries to allocate `skb`. If the allocation fails, it falls back to the normal path. Tested-on: D-Link DGE-550T Rev-A3

INFO

Published Date :

Oct. 28, 2025, 12:15 p.m.

Last Modified :

Oct. 28, 2025, 12:15 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-40053 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Handle allocation failures to prevent NULL pointer dereferences.
  • Update the Linux kernel to the latest version.
  • Apply the provided patch for the dlink driver.
  • Test the fix on affected D-Link DGE-550T hardware.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-40053.

URL Resource
https://git.kernel.org/stable/c/5aa9b885602811a026a3f45c92ea2b4b04c54f09
https://git.kernel.org/stable/c/7ed5010fef0930f4322d620052edc854ef3ec41f
https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8
https://git.kernel.org/stable/c/9d49e4b14609e1a20d931e718962c4b6b5485174
https://git.kernel.org/stable/c/ea87151df398d407a632c7bf63013290f01c5009
https://git.kernel.org/stable/c/fd7b6b2c920d7fd370a612be416a904d6e1ebe55
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40053 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-40053 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-40053 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-40053 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Oct. 28, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: net: dlink: handle copy_thresh allocation failure The driver did not handle failure of `netdev_alloc_skb_ip_align()`. If the allocation failed, dereferencing `skb->protocol` could lead to a NULL pointer dereference. This patch tries to allocate `skb`. If the allocation fails, it falls back to the normal path. Tested-on: D-Link DGE-550T Rev-A3
    Added Reference https://git.kernel.org/stable/c/5aa9b885602811a026a3f45c92ea2b4b04c54f09
    Added Reference https://git.kernel.org/stable/c/7ed5010fef0930f4322d620052edc854ef3ec41f
    Added Reference https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8
    Added Reference https://git.kernel.org/stable/c/9d49e4b14609e1a20d931e718962c4b6b5485174
    Added Reference https://git.kernel.org/stable/c/ea87151df398d407a632c7bf63013290f01c5009
    Added Reference https://git.kernel.org/stable/c/fd7b6b2c920d7fd370a612be416a904d6e1ebe55
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.