Bug 2536374 (CVE-2026-93136) - CVE-2026-93136 kernel: bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation
Summary: CVE-2026-93136 kernel: bus: mhi: ep: Fix device refcount leak in the error pa...
Keywords:
Status: NEW
Alias: CVE-2026-93136
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 17:35 UTC by OSIDB Bzimport
Modified: 2026-09-23 13:51 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-17 17:35:19 UTC
In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation

mhi_ep_create_device() takes one device reference for the UL channel and
another for the DL channel after allocating the transfer device. These
references are normally released by mhi_ep_destroy_device() before the
device itself is removed.

If dev_set_name() or device_add() fails, the error path currently drops
only one reference. The remaining channel references keep the device
from being released and leave the channels associated with a device that
was never registered.

Route both failures through a common unwind path that drops the DL
channel reference, the UL channel reference, and the initial reference
from device_initialize().


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