Bug 2516964 (CVE-2026-74531) - CVE-2026-74531 kernel: Bluetooth: hci_conn: hold conn reference in abort_conn_sync()
Summary: CVE-2026-74531 kernel: Bluetooth: hci_conn: hold conn reference in abort_conn...
Keywords:
Status: NEW
Alias: CVE-2026-74531
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 12:41 UTC by OSIDB Bzimport
Modified: 2026-08-21 07:02 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 12:41:23 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_conn: hold conn reference in abort_conn_sync()

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

Hold refcount to avoid that.
Comment 1 gkamathe 2026-08-21 06:58:01 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081546-CVE-2026-74531-0354@gregkh/T
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