CVE-2025-40055
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-28

Last updated on: 2025-10-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix double free in user_cluster_connect() user_cluster_disconnect() frees "conn->cc_private" which is "lc" but then the error handling frees "lc" a second time. Set "lc" to NULL on this path to avoid a double free.
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Meta Information
Published
2025-10-28
Last Modified
2025-10-30
Generated
2026-06-16
AI Q&A
2025-10-28
EPSS Evaluated
2026-06-15
NVD
CVE-2025-40055
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a double free issue in the Linux kernel's ocfs2 component. Specifically, in the user_cluster_disconnect() function, a memory area referred to as "lc" is freed twice due to error handling logic. This can lead to undefined behavior or potential exploitation. The fix involves setting "lc" to NULL after the first free to prevent the second free.

Impact Analysis

A double free vulnerability can cause memory corruption, which may lead to system crashes, denial of service, or potentially allow an attacker to execute arbitrary code with kernel privileges, depending on the exploitation scenario.

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