CVE-2025-39952
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-04

Last updated on: 2025-10-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: avoid buffer overflow in WID string configuration Fix the following copy overflow warning identified by Smatch checker. drivers/net/wireless/microchip/wilc1000/wlan_cfg.c:184 wilc_wlan_parse_response_frame() error: '__memcpy()' 'cfg->s[i]->str' copy overflow (512 vs 65537) This patch introduces size check before accessing the memory buffer. The checks are base on the WID type of received data from the firmware. For WID string configuration, the size limit is determined by individual element size in 'struct wilc_cfg_str_vals' that is maintained in 'len' field of 'struct wilc_cfg_str'.
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Meta Information
Published
2025-10-04
Last Modified
2025-10-06
Generated
2026-05-06
AI Q&A
2025-10-04
EPSS Evaluated
2026-05-05
NVD
CVE-2025-39952
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microchip wilc1000 *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a buffer overflow issue in the Linux kernel's wifi driver for the wilc1000 device. Specifically, it occurs in the WID string configuration where a memcpy operation could overflow the buffer because the size of the copied data was not properly checked. The vulnerability was fixed by adding size checks based on the WID type and the length fields in the relevant data structures to prevent copying more data than the buffer can hold.


How can this vulnerability impact me? :

A buffer overflow vulnerability like this can potentially lead to memory corruption, which might be exploited to cause crashes, execute arbitrary code, or escalate privileges on the affected system. This could compromise the stability and security of the system running the vulnerable Linux kernel wifi driver.


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