CVE-2025-71154
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-23

Last updated on: 2026-02-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: rtl8150: fix memory leak on usb_submit_urb() failure In async_set_registers(), when usb_submit_urb() fails, the allocated async_req structure and URB are not freed, causing a memory leak. The completion callback async_set_reg_cb() is responsible for freeing these allocations, but it is only called after the URB is successfully submitted and completes (successfully or with error). If submission fails, the callback never runs and the memory is leaked. Fix this by freeing both the URB and the request structure in the error path when usb_submit_urb() fails.
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Meta Information
Published
2026-01-23
Last Modified
2026-02-26
Generated
2026-06-16
AI Q&A
2026-01-23
EPSS Evaluated
2026-06-15
NVD
CVE-2025-71154
EUVD
EUVD-2026-4403
Affected Vendors & Products
Showing 15 associated CPEs
Vendor Product Version / Range
linux linux_kernel 3.10
linux linux_kernel 3.10
linux linux_kernel 3.10
linux linux_kernel 3.10
linux linux_kernel 3.10
linux linux_kernel 3.10
linux linux_kernel From 5.11 (inc) to 5.15.198 (exc)
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.13 (inc) to 6.18.4 (exc)
linux linux_kernel From 3.10.1 (inc) to 5.10.248 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.160 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.120 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.64 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's USB driver for the rtl8150 device. Specifically, when the function usb_submit_urb() fails during the asynchronous setting of registers, the allocated memory for the async_req structure and the USB Request Block (URB) is not freed. Normally, a completion callback frees this memory, but it only runs if usb_submit_urb() succeeds. Because the callback does not run on failure, the memory remains allocated, causing a leak. The fix involves freeing these allocations immediately when usb_submit_urb() fails.

Impact Analysis

This vulnerability can cause a memory leak in the Linux kernel when using the rtl8150 USB driver. Over time, repeated failures in usb_submit_urb() could lead to increased memory consumption, potentially degrading system performance or causing instability due to exhausted memory resources.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the memory leak in the rtl8150 USB driver has been fixed. This fix ensures that allocated memory is properly freed when usb_submit_urb() fails, preventing memory leaks.

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