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CVE-2026-93801
smb/client: zero-initialize stack-allocated cifs_open_info_data
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: smb/client: zero-initialize stack-allocated cifs_open_info_data Stack-allocated cifs_open_info_data may contain random data. This can make some fields have wrong value if they are not set later.

Details
INFO

Published Date :

Sept. 24, 2026, 5:17 p.m.

Last Modified :

Sept. 24, 2026, 5:17 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2026-93801 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
Zero-initialize stack-allocated cifs_open_info_data to prevent incorrect field values.
  • Update the Linux kernel to include the fix.
  • Ensure cifs_open_info_data is properly initialized.
References
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-2026-93801.

URL Resource
https://git.kernel.org/stable/c/22532dd88694ed20bdd47523ffa709f166ce776b
https://git.kernel.org/stable/c/74ff47e6c4213fcfeba2de448d9cbda200507d22
https://git.kernel.org/stable/c/8fce4cf4369c766a3293a05419500cbfde72e60d
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-93801 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-2026-93801 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-2026-93801 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-2026-93801 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. 24, 2026

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: smb/client: zero-initialize stack-allocated cifs_open_info_data Stack-allocated cifs_open_info_data may contain random data. This can make some fields have wrong value if they are not set later.
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/93xxx/CVE-2026-93801.json">CVE-2026-93801</a>
    Added Reference https://git.kernel.org/stable/c/22532dd88694ed20bdd47523ffa709f166ce776b
    Added Reference https://git.kernel.org/stable/c/74ff47e6c4213fcfeba2de448d9cbda200507d22
    Added Reference https://git.kernel.org/stable/c/8fce4cf4369c766a3293a05419500cbfde72e60d
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.
CVSS
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.