Linux Kernel up to 6.19-rc3 btusb.c btusb_probe allocation of resources

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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.3/6.19-rc3 and classified as critical. This impacts the function btusb_probe of the file btusb.c. Executing a manipulation can lead to allocation of resources. The identification of this vulnerability is CVE-2025-71082. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.3/6.19-rc3. This vulnerability affects the function btusb_probe of the file btusb.c. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-71082 since 01/13/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 298924 (SUSE SLES12 : Recommended update for initial livepatch (SUSE-SU-2026:0473-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.160, 6.6.120, 6.12.64, 6.18.4 or 6.19-rc4 eliminates this vulnerability. Applying the patch cca0e9206e3bcc63cd3e72193e60149165d493cc/c0ecb3e4451fe94f4315e6d09c4046dfbc42090b/1e54c19eaf84ba652c4e376571093e58e144b339/fdf7c640fb8a44a59b0671143d8c2f738bc48003/252714f1e8bdd542025b16321c790458014d6880 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (298924). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298924
Nessus Name: SUSE SLES12 : Recommended update for initial livepatch (SUSE-SU-2026:0473-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.160/6.6.120/6.12.64/6.18.4/6.19-rc4
Patch: cca0e9206e3bcc63cd3e72193e60149165d493cc/c0ecb3e4451fe94f4315e6d09c4046dfbc42090b/1e54c19eaf84ba652c4e376571093e58e144b339/fdf7c640fb8a44a59b0671143d8c2f738bc48003/252714f1e8bdd542025b16321c790458014d6880

Timelineinfo

01/13/2026 Advisory disclosed
01/13/2026 +0 days CVE reserved
01/13/2026 +0 days VulDB entry created
03/31/2026 +77 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71082 (🔒)
GCVE (CVE): GCVE-0-2025-71082
GCVE (VulDB): GCVE-100-340624

Entryinfo

Created: 01/13/2026 17:26
Updated: 03/31/2026 16:55
Changes: 01/13/2026 17:26 (59), 02/14/2026 21:27 (2), 03/25/2026 20:55 (11), 03/31/2026 16:55 (1)
Complete: 🔍
Cache ID: 216::103

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