CVE-2025-71082 Details
Description
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.
A vulnerability in the Bluetooth btusb driver of the Linux kernel has been addressed by reverting a previous change that used the 'devm_kzalloc' function for memory allocation. This change is significant because it ties the lifespan of the allocated data to a specific driver-interface binding, which can lead to issues when the driver interacts with multiple interfaces. The problem arises in the 'btusb_disconnect' function, where the 'devm' managed data can be prematurely freed, causing potential disruptions. The vulnerability affects the Linux kernel Bluetooth subsystem, specifically within the btusb driver.
Users should update to the latest version of the Linux kernel where this vulnerability has been addressed. Instructions for updating the kernel can be found in the official Linux documentation or through the package management system of the Linux distribution in use.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 10, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/1e54c19eaf84ba652c4e376571093e58e144b339 | kernel.org | Patch |
| https://git.kernel.org/stable/c/252714f1e8bdd542025b16321c790458014d6880 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c0ecb3e4451fe94f4315e6d09c4046dfbc42090b | kernel.org | Patch |
| https://git.kernel.org/stable/c/cca0e9206e3bcc63cd3e72193e60149165d493cc | kernel.org | Patch |
| https://git.kernel.org/stable/c/fdf7c640fb8a44a59b0671143d8c2f738bc48003 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fff9206b0907252a41eb12b7c1407b9347df18b1 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.7.1, < 5.15.198 >= 5.16, < 6.1.160 >= 6.2, < 6.6.120 >= 6.7, < 6.12.64 >= 6.13, < 6.18.4 3.7 - 6.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 6.19 rc5 6.19 rc6 6.19 rc7 6.19 rc8 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 25, 2026 | Initial Analysis | [email protected] |
| Jan 19, 2026 | CVE Modified | kernel.org |
| Jan 13, 2026 | New CVE Received | kernel.org |