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CVE-2025-40062
crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs
Description

In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs When the initialization of qm->debug.acc_diff_reg fails, the probe process does not exit. However, after qm->debug.qm_diff_regs is freed, it is not set to NULL. This can lead to a double free when the remove process attempts to free it again. Therefore, qm->debug.qm_diff_regs should be set to NULL after it is freed.

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-2025-40062 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
Fix double free vulnerability by setting freed pointers to NULL.
  • Set qm->debug.qm_diff_regs to NULL after freeing.
  • Ensure probe exits on initialization failure.
  • Review related memory management in the driver.
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-2025-40062.

URL Resource
https://git.kernel.org/stable/c/1750f1ec143ebabdbdfa013668665c9d5042c430
https://git.kernel.org/stable/c/7226a0650ad5705bd8d39a11be270fa21ed1e6a5
https://git.kernel.org/stable/c/a7836260d5121949ba734e840d42a86ab4a32fcc
https://git.kernel.org/stable/c/a87a21a56244b8f4eb357f6bad879247005bbe38
https://git.kernel.org/stable/c/f0cafb02de883b3b413d34eb079c9680782a9cc1
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40062 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-2025-40062 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-2025-40062 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-2025-40062 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: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs When the initialization of qm->debug.acc_diff_reg fails, the probe process does not exit. However, after qm->debug.qm_diff_regs is freed, it is not set to NULL. This can lead to a double free when the remove process attempts to free it again. Therefore, qm->debug.qm_diff_regs should be set to NULL after it is freed.
    Added Reference https://git.kernel.org/stable/c/1750f1ec143ebabdbdfa013668665c9d5042c430
    Added Reference https://git.kernel.org/stable/c/7226a0650ad5705bd8d39a11be270fa21ed1e6a5
    Added Reference https://git.kernel.org/stable/c/a7836260d5121949ba734e840d42a86ab4a32fcc
    Added Reference https://git.kernel.org/stable/c/a87a21a56244b8f4eb357f6bad879247005bbe38
    Added Reference https://git.kernel.org/stable/c/f0cafb02de883b3b413d34eb079c9680782a9cc1
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.