Bug 2502522 (CVE-2026-64178) - CVE-2026-64178 kernel: Bluetooth: bnep: Fix UAF read of dev->name
Summary: CVE-2026-64178 kernel: Bluetooth: bnep: Fix UAF read of dev->name
Keywords:
Status: NEW
Alias: CVE-2026-64178
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 17:04 UTC by OSIDB Bzimport
Modified: 2026-07-20 12:47 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2026-07-19 17:04:04 UTC
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: bnep: Fix UAF read of dev->name

bnep_add_connection() needs to keep holding the bnep_session_sem while
reading dev->name (just like bnep_get_connlist() does); otherwise the
bnep_session() thread can concurrently free the net_device, which can for
example be triggered by a concurrent bnep_del_connection().

(This UAF is fairly uninteresting from a security perspective;
calling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN)
check. It also requires completely tearing down a netdev during a fairly
tight race window.)


Note You need to log in before you can comment on or make changes to this bug.