CVE-2025-40193
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-12

Last updated on: 2025-11-14

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: xtensa: simdisk: add input size check in proc_write_simdisk A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash. This follows the same pattern as commit ee76746387f6 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()")
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Meta Information
Published
2025-11-12
Last Modified
2025-11-14
Generated
2026-06-16
AI Q&A
2025-11-13
EPSS Evaluated
2026-06-15
NVD
CVE-2025-40193
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux kernel *
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel's xtensa simdisk component involves a missing input size check in the proc_write_simdisk function. A malicious user could provide an invalid value to the memdup_user_nul() function, which may lead to a kernel crash.

Impact Analysis

The vulnerability can cause the Linux kernel to crash if exploited, potentially leading to denial of service or system instability.

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