CVE-2026-74302

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix UAF in hci_unregister_dev() hci_unregister_dev() does not disable cmd_timer and ncmd_timer before the hci_dev structure is freed. If a timeout fires during device teardown, the callback dereferences freed memory (including the hdev->reset function pointer), leading to a use-after-free. Add disable_delayed_work_sync() calls alongside the existing disable_work_sync() calls to ensure both timers are fully quiesced before teardown proceeds.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/48c7ad6afcc58c2cda11fed39791708103b6a644
https://git.kernel.org/stable/c/5edcc018fa6e80b2c478454a4a8229c23d67c181
https://git.kernel.org/stable/c/672d52d9412252e61b8de8d773ccdf5a277cf540
https://git.kernel.org/stable/c/a0fd1086a57b982f8c24ae4ab165c2af39fe1735

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-74302

Mitre link : CVE-2026-74302

CVE.ORG link : CVE-2026-74302

JSON object : View

Products Affected

No product.

CWE

No CWE.

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