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CVE-2025-40036
misc: fastrpc: fix possible map leak in fastrpc_put_args
Description

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.

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-2025-40036 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
Ensure proper cleanup of mapped buffers on copy_to_user() failure to prevent leaks.
  • Redirect to cleanup path on copy_to_user() failure.
  • Release all mapped buffers before returning.
  • Apply the kernel patch to fix the map leak.
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-2025-40036.

URL Resource
https://git.kernel.org/stable/c/3ad42dc66445df6977cf4be0c06f1a655299ce6c
https://git.kernel.org/stable/c/78d33a041555db03903e8037fd053ed74fbd88cb
https://git.kernel.org/stable/c/a085658264d0c8d4f795d4631f77d7289a021de9
https://git.kernel.org/stable/c/c000f65f0ac93d9f9cc69a230d372f6ca93e4879
https://git.kernel.org/stable/c/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40036 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-2025-40036 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-2025-40036 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-2025-40036 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: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.
    Added Reference https://git.kernel.org/stable/c/3ad42dc66445df6977cf4be0c06f1a655299ce6c
    Added Reference https://git.kernel.org/stable/c/78d33a041555db03903e8037fd053ed74fbd88cb
    Added Reference https://git.kernel.org/stable/c/a085658264d0c8d4f795d4631f77d7289a021de9
    Added Reference https://git.kernel.org/stable/c/c000f65f0ac93d9f9cc69a230d372f6ca93e4879
    Added Reference https://git.kernel.org/stable/c/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e
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.