CVE-2025-39920
pcmcia: Add error handling for add_interval() in do_validate_mem()
Description
In the Linux kernel, the following vulnerability has been resolved: pcmcia: Add error handling for add_interval() in do_validate_mem() In the do_validate_mem(), the call to add_interval() does not handle errors. If kmalloc() fails in add_interval(), it could result in a null pointer being inserted into the linked list, leading to illegal memory access when sub_interval() is called next. This patch adds an error handling for the add_interval(). If add_interval() returns an error, the function will return early with the error code.
INFO
Published Date :
Oct. 1, 2025, 8:15 a.m.
Last Modified :
Oct. 1, 2025, 8:15 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2025-39920
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.
No affected product recoded yet
Solution
- Apply the provided kernel patch.
- Update to a fixed Linux kernel version.
- Ensure error handling for add_interval() is implemented.
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-2025-39920.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-39920 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-2025-39920
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).
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The following list is the news that have been mention
CVE-2025-39920 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-39920 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 01, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: pcmcia: Add error handling for add_interval() in do_validate_mem() In the do_validate_mem(), the call to add_interval() does not handle errors. If kmalloc() fails in add_interval(), it could result in a null pointer being inserted into the linked list, leading to illegal memory access when sub_interval() is called next. This patch adds an error handling for the add_interval(). If add_interval() returns an error, the function will return early with the error code. Added Reference https://git.kernel.org/stable/c/06b26e3099207c94b3d1be8565aedc6edc4f0a60 Added Reference https://git.kernel.org/stable/c/289b58f8ff3198d091074a751d6b8f6827726f3e Added Reference https://git.kernel.org/stable/c/369bf6e241506583f4ee7593c53b92e5a9f271b4 Added Reference https://git.kernel.org/stable/c/4a81f78caa53e0633cf311ca1526377d9bff7479 Added Reference https://git.kernel.org/stable/c/5b60ed401b47897352c520bc724c85aa908dedcc Added Reference https://git.kernel.org/stable/c/85be7ef8c8e792a414940a38d94565dd48d2f236 Added Reference https://git.kernel.org/stable/c/8699358b6ac99b8ccc97ed9e6e3669ef8958ef7b Added Reference https://git.kernel.org/stable/c/ae184024ef31423e5beb44cf4f52999bbcf2fe5b