IT

Tracker / CVE-2025-71082

CVE-2025-71082

High 7.8

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: revert use of devm_kzalloc in btusb This reverts commit 98921dbd00c4e ("Bluetooth: Use devm_kzalloc in btusb.c file"). In btusb_probe(), we use devm_kzalloc() to allocate the btusb data. This ties the lifetime of all the btusb data to the binding of a driver to one interface, INTF. In a driver that binds to other interfaces, ISOC and DIAG, this is an accident waiting to happen. The issue is revealed in btusb_disconnect(), where calling usb_driver_release_interface(&btusb_driver, data->intf) will have devm free the data that is also being used by the other interfaces of the driver that may not be released yet. To fix this, revert the use of devm and go back to freeing memory explicitly.

Affected products and versions

linux linux_kernel
linux linux_kernel · 3.7.1 → 5.15.198
linux linux_kernel · 5.16 → 6.1.160
linux linux_kernel · 6.13 → 6.18.4
linux linux_kernel · 6.2 → 6.6.120
linux linux_kernel · 6.7 → 6.12.64

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References