In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: fix use-after-free on registration failure Make sure to… (CVE-2026-64471)
A use-after-free vulnerability was identified and resolved in the Linux kernel's Bluetooth USB driver (btusb). The issue occurred when controller registration failed, and sibling interfaces were not properly released, potentially leading to use-after-free and double-free conditions upon disconnection. The flaw was reported during a code review and has been fixed to ensure proper resource release on registration failure.
AI Analysis
Technical Summary
The Linux kernel's Bluetooth USB driver (btusb) contained a use-after-free vulnerability triggered by failure to release sibling interfaces when controller registration failed. This could cause use-after-free and double-free errors when the interfaces were later disconnected. The vulnerability was addressed by ensuring sibling interfaces are properly released during error handling in the probe function, preventing memory corruption.
Potential Impact
The vulnerability could lead to memory corruption issues such as use-after-free or double-free in the Bluetooth USB driver, potentially causing system instability or crashes. No known exploits in the wild have been reported. The impact is limited to affected Linux kernel versions with the vulnerable btusb driver code path.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to properly release sibling interfaces on controller registration failure in the btusb driver. Users should apply the official kernel updates that include this fix. Patch status is not explicitly confirmed here; check the Linux kernel vendor advisory or source repository for the specific fixed versions and apply updates accordingly.
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: fix use-after-free on registration failure Make sure to… (CVE-2026-64471)
Description
A use-after-free vulnerability was identified and resolved in the Linux kernel's Bluetooth USB driver (btusb). The issue occurred when controller registration failed, and sibling interfaces were not properly released, potentially leading to use-after-free and double-free conditions upon disconnection. The flaw was reported during a code review and has been fixed to ensure proper resource release on registration failure.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's Bluetooth USB driver (btusb) contained a use-after-free vulnerability triggered by failure to release sibling interfaces when controller registration failed. This could cause use-after-free and double-free errors when the interfaces were later disconnected. The vulnerability was addressed by ensuring sibling interfaces are properly released during error handling in the probe function, preventing memory corruption.
Potential Impact
The vulnerability could lead to memory corruption issues such as use-after-free or double-free in the Bluetooth USB driver, potentially causing system instability or crashes. No known exploits in the wild have been reported. The impact is limited to affected Linux kernel versions with the vulnerable btusb driver code path.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to properly release sibling interfaces on controller registration failure in the btusb driver. Users should apply the official kernel updates that include this fix. Patch status is not explicitly confirmed here; check the Linux kernel vendor advisory or source repository for the specific fixed versions and apply updates accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h76x-2h2r-8jw4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64471"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542069c2644c7f80823ba
Added to database: 07/25/2026, 23:08:54 UTC
Last enriched: 07/25/2026, 23:16:53 UTC
Last updated: 07/26/2026, 03:56:22 UTC
Views: 5
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