CVE-2026-74510High· 7.8▾ TwilightIn 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 wa…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 < 50af4280a587c9971b5388cbc438f1324e626b7bLinux >= e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 < 86ed4dd6548ccf277bc691bc912ca06e76b9d80cLinux >= e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 < 7c2a152a897cd1c184b2051484d4f74d803e7f4aLinux >= e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 < c569def320aa8b1fde89227e2ea96606790fd86dLinux >= e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 < 51be7280980fddc90ebe874a69c2fe8ab02bb46aLinux >= e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 < d0a7b48ad0921bd88effaee10bf970ab1d5d0dddLinux 2.6.39Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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