CVE-2026-74510 (GCVE-0-2026-74510)
Vulnerability from cvelistv5
Published
2026-08-15 12:27
Modified
2026-10-16 19:05
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix UAF in pair command cancellation The pairing completion and authentication failure callbacks look up the pending MGMT_OP_PAIR_DEVICE command by walking hdev->mgmt_pending. The lookup returned a command that was still linked on the shared pending list, without keeping mgmt_pending_lock held for the later dereference and removal. A concurrent MGMT_OP_CANCEL_PAIR_DEVICE request can remove and free the same pending command before the callback uses it. The reverse race is also possible when cancel_pair_device() gets a command from pending_find() and a callback removes it before the cancel path dereferences it. This can lead to a use-after-free and a second list_del(). Make the pairing lookup helpers transfer ownership of the pending command by removing it from hdev->mgmt_pending while holding mgmt_pending_lock. The callbacks and cancel path then complete the command and free it directly, so racing paths cannot find or free the same command again. Take a temporary hci_conn reference in cancel_pair_device() because the command completion drops the reference stored in the pending command.
References
Impacted products
Vendor Product Version
Linux Linux Version: e9a416b5ce0c0f93819f55d34cf6882196e9c3b2
Version: e9a416b5ce0c0f93819f55d34cf6882196e9c3b2
Version: e9a416b5ce0c0f93819f55d34cf6882196e9c3b2
Version: e9a416b5ce0c0f93819f55d34cf6882196e9c3b2
Version: e9a416b5ce0c0f93819f55d34cf6882196e9c3b2
Version: e9a416b5ce0c0f93819f55d34cf6882196e9c3b2
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}


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