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CVE-2025-38694
media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()
Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb() In dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].len to prevent crash. Similar issue occurs when access msg[1].buf[0] and msg[1].buf[1]. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

INFO

Published Date :

Sept. 4, 2025, 4:15 p.m.

Last Modified :

Sept. 5, 2025, 5:47 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-38694 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
Apply kernel updates to fix null pointer dereference issues in the DVB frontend driver.
  • Update the Linux kernel to the latest stable version.
  • Apply patches addressing dib7090p null pointer dereferences.
  • Ensure all DVB frontend driver components are updated.
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-2025-38694.

URL Resource
https://git.kernel.org/stable/c/09906650484a09b3a4d4b3d3065395856810becd
https://git.kernel.org/stable/c/0bb32863426afe0badac25c28d59021f211d0f48
https://git.kernel.org/stable/c/19eb5d8e6aa1169d368a4d69aae5572950deb89d
https://git.kernel.org/stable/c/529fd5593b721e6f4370c591f5086649ed149ff6
https://git.kernel.org/stable/c/a0f744d6cdde81d7382e183f77a4080a39b206cd
https://git.kernel.org/stable/c/bc07cae4f36bb18d5b6a9ed835c1278ca44ec82e
https://git.kernel.org/stable/c/c33280d6bd668dbdc5a5f07887cc63a52ab4789c
https://git.kernel.org/stable/c/ce5cac69b2edac3e3246fee03e8f4c2a1075238b
https://git.kernel.org/stable/c/ce8b7c711b9c4f040b5419729d0972db8e374324
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-38694 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-2025-38694 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-2025-38694 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-2025-38694 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

    Sep. 04, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb() In dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].len to prevent crash. Similar issue occurs when access msg[1].buf[0] and msg[1].buf[1]. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
    Added Reference https://git.kernel.org/stable/c/09906650484a09b3a4d4b3d3065395856810becd
    Added Reference https://git.kernel.org/stable/c/0bb32863426afe0badac25c28d59021f211d0f48
    Added Reference https://git.kernel.org/stable/c/19eb5d8e6aa1169d368a4d69aae5572950deb89d
    Added Reference https://git.kernel.org/stable/c/529fd5593b721e6f4370c591f5086649ed149ff6
    Added Reference https://git.kernel.org/stable/c/a0f744d6cdde81d7382e183f77a4080a39b206cd
    Added Reference https://git.kernel.org/stable/c/bc07cae4f36bb18d5b6a9ed835c1278ca44ec82e
    Added Reference https://git.kernel.org/stable/c/c33280d6bd668dbdc5a5f07887cc63a52ab4789c
    Added Reference https://git.kernel.org/stable/c/ce5cac69b2edac3e3246fee03e8f4c2a1075238b
    Added Reference https://git.kernel.org/stable/c/ce8b7c711b9c4f040b5419729d0972db8e374324
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.