CVE-2021-47170 (GCVE-0-2021-47170)
Vulnerability from cvelistv5
Published
2024-03-25 09:16
Modified
2025-12-18 11:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: usbfs: Don't WARN about excessively large memory allocations Syzbot found that the kernel generates a WARNing if the user tries to submit a bulk transfer through usbfs with a buffer that is way too large. This isn't a bug in the kernel; it's merely an invalid request from the user and the usbfs code does handle it correctly. In theory the same thing can happen with async transfers, or with the packet descriptor table for isochronous transfers. To prevent the MM subsystem from complaining about these bad allocation requests, add the __GFP_NOWARN flag to the kmalloc calls for these buffers.
References
Impacted products
Vendor Product Version
Linux Linux Version: add1aaeabe6b08ed26381a2a06e505b2f09c3ba5
Version: add1aaeabe6b08ed26381a2a06e505b2f09c3ba5
Version: add1aaeabe6b08ed26381a2a06e505b2f09c3ba5
Version: add1aaeabe6b08ed26381a2a06e505b2f09c3ba5
Version: add1aaeabe6b08ed26381a2a06e505b2f09c3ba5
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