CVE-2026-90252Bluetooth: MGMT: free the HCI command when it is cancelled
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmt_hci_cmd_sync() queues the pending command with a NULL destroy callback, so it is only freed if send_hci_cmd_sync() runs. A cancelled entry is leaked, as _hci_cmd_sync_cancel_entry() does not release entry->data when there is no destroy callback, and hci_cmd_sync_clear() cancels every pending entry when the controller is unregistered. Nothing else reclaims it either: mgmt_pending_new() does not put the command on hdev->mgmt_pending. The leak also pins the socket reference taken by mgmt_pending_new(), so the mgmt socket is never released. Free the command from a destroy callback. The now-empty done label is replaced by a direct return.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 827af4787e74e8df9e8e0677a69fbb15e0856d2f before e0cd7b34dc6b5414cac3d4cd376f73d3e9ffbd93; from 827af4787e74e8df9e8e0677a69fbb15e0856d2f before 481533b03985177ddc805e0bd12fc07e7adf9040; 827af4787e74e8df9e8e0677a69fbb15e0856d2f builds before 414b365ecea6c30357adee6b8a7c5edc03a03575 | CNA record |
References
- https://git.kernel.org/stable/c/e0cd7b34dc6b5414cac3d4cd376f73d3e9ffbd93
- https://git.kernel.org/stable/c/481533b03985177ddc805e0bd12fc07e7adf9040
- https://git.kernel.org/stable/c/414b365ecea6c30357adee6b8a7c5edc03a03575
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.