Bug 2525495 (CVE-2026-80692)

Summary: CVE-2026-80692 kernel: Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Bluetooth `hci_sync` component of the Linux kernel. This vulnerability, a Use-After-Free (UAF), could allow a local attacker to potentially cause a system crash or execute unauthorized code. This occurs if a connection object is released from memory while the `hci_sync` task is still using it, leading to unpredictable system behavior or a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-08-28 07:47:57 UTC
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks

There is theoretical UAF if the conn is freed while the hci_sync task
is running.

Hold refcount to avoid that.