Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2025-38076 First vendor Publication 2025-06-18
Vendor Cve Last vendor Modification 2025-06-18

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
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Detail

In the Linux kernel, the following vulnerability has been resolved:

alloc_tag: allocate percpu counters for module tags dynamically

When a module gets unloaded it checks whether any of its tags are still in use and if so, we keep the memory containing module's allocation tags alive until all tags are unused. However percpu counters referenced by the tags are freed by free_module(). This will lead to UAF if the memory allocated by a module is accessed after module was unloaded.

To fix this we allocate percpu counters for module allocation tags dynamically and we keep it alive for tags which are still in use after module unloading. This also removes the requirement of a larger PERCPU_MODULE_RESERVE when memory allocation profiling is enabled because percpu memory for counters does not need to be reserved anymore.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-38076

Sources (Detail)

https://git.kernel.org/stable/c/12ca42c237756182aad8ab04654c952765cb9061
https://git.kernel.org/stable/c/3cc733e6d96c938d2b82be96858a0ab900eb6fdc
Source Url

Alert History

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0
Date Informations
2025-06-18 17:20:35
  • First insertion