CVE-2026-80762
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix accept list UAF during suspend hci_update_event_filter_sync() walks hdev->accept_list while sending a…
Overview
CVE-2026-80762 is a known-severity vulnerability. It was published on September 4, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: Fix accept list UAF during suspend
hci_update_event_filter_sync() walks hdev->accept_list while sending a
synchronous HCI command for each remote-wakeup device. The suspend path
holds hdev->req_lock, but accept-list updates are serialized by hdev->lock.
Consequently, remove_device() can free the current list entry during the
controller wait.
The following interleaving causes the use-after-free:
hci_update_event_filter_sync() remove_device()
fetch accept-list entry
hci_set_event_filter_sync()
wait for controller response hci_dev_lock()
list_del()
kfree()
hci_dev_unlock()
read the freed list.next
KASAN reported:
BUG: KASAN: slab-use-after-free in hci_suspend_sync+0x835/0x910
Read of size 8 at addr ffff88810bec8440 by task kworker/0:1/10
Workqueue: events vhci_susp
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
References
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Frequently asked questions
What is CVE-2026-80762?
CVE-2026-80762 is a known-severity vulnerability. It was published on September 4, 2026.
How severe is CVE-2026-80762?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-80762?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-80762?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80762 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.