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5.5
MEDIUM CVSS 3.1
CVE-2025-21783
Linux Kernel GPIOlib NULL Pointer Dereference Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix crash on error in gpiochip_get_ngpios() The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash.

INFO

Published Date :

Feb. 27, 2025, 3:15 a.m.

Last Modified :

Feb. 27, 2025, 3:15 a.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-21783 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
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Update the Linux kernel to fix a null pointer dereference in gpiochip_get_ngpios.
  • Update the Linux kernel.
  • Replace chip_* macros with dev_* macros.
  • Ensure gpiodev is initialized before use.
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-2025-21783.

URL Resource
https://git.kernel.org/stable/c/189fb76215e479c10731baabb50f1a352d2078f5
https://git.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4f
https://git.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44
https://git.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-21783 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-2025-21783 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-2025-21783 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-2025-21783 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.

  • Initial Analysis by [email protected]

    Mar. 05, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 from (excluding) 6.13.4 *cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 from (excluding) 6.12.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6 from (excluding) 6.6.79
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/189fb76215e479c10731baabb50f1a352d2078f5 Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4f Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44 Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68 Types: Mailing List, Patch
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 27, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix crash on error in gpiochip_get_ngpios() The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash.
    Added Reference https://git.kernel.org/stable/c/189fb76215e479c10731baabb50f1a352d2078f5
    Added Reference https://git.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4f
    Added Reference https://git.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44
    Added Reference https://git.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68
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
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact