CVE-2025-40036
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: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.
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Meta Information
Published
2025-10-28
Last Modified
2025-10-30
Generated
2026-05-07
AI Q&A
2025-10-28
EPSS Evaluated
2026-05-05
NVD
CVE-2025-40036
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux kernel *
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 in the Linux kernel's fastrpc component involves a failure in the copy_to_user() function that causes an early return without properly cleaning up the fdlist (file descriptor list) updated by the DSP. This improper cleanup can lead to a map leak, meaning that mapped buffers are not released correctly, potentially causing resource leaks. The fix ensures that on failure, the code redirects to a cleanup path to release all mapped buffers before returning.


How can this vulnerability impact me? :

The vulnerability can lead to resource leaks in the system due to mapped buffers not being properly released. Over time, this could degrade system performance or stability, potentially causing crashes or denial of service if resources are exhausted.


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