CVE-2025-40193
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-11-12
Last updated on: 2025-11-14
Assigner: kernel.org
Description
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()")
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | kernel | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
The vulnerability can cause the Linux kernel to crash if exploited, potentially leading to denial of service or system instability.
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