CVE-2023-53054

published 2025-05-02

CVE-2023-53054: In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: fix a devres leak in hw_enable upon suspend resume Each time the platform goes…

Priority P4 19 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

In the Linux kernel, the following vulnerability has been resolved:

usb: dwc2: fix a devres leak in hw_enable upon suspend resume

Each time the platform goes to low power, PM suspend / resume routines
call: __dwc2_lowlevel_hw_enable -> devm_add_action_or_reset().
This adds a new devres each time.
This may also happen at runtime, as dwc2_lowlevel_hw_enable() can be
called from udc_start().

This can be seen with tracing:
- echo 1 > /sys/kernel/debug/tracing/events/dev/devres_log/enable
- go to low power
- cat /sys/kernel/debug/tracing/trace

A new "ADD" entry is found upon each low power cycle:
... devres_log: 49000000.usb-otg ADD 82a13bba devm_action_release (8 bytes)
... devres_log: 49000000.usb-otg ADD 49889daf devm_action_release (8 bytes)
...

A second issue is addressed here:
- regulator_bulk_enable() is called upon each PM cycle (suspend/resume).
- regulator_bulk_disable() never gets called.

So the reference count for these regulators constantly increase, by one
upon each low power cycle, due to missing regulator_bulk_disable() call
in __dwc2_lowlevel_hw_disable().

The original fix that introduced the devm_add_action_or_reset() call,
fixed an issue during probe, that happens due to other errors in
dwc2_driver_probe() -> dwc2_core_reset(). Then the probe fails without
disabling regulators, when dr_mode == USB_DR_MODE_PERIPHERAL.

Rather fix the error path: disable all the low level hardware in the
error path, by using the "hsotg->ll_hw_enabled" flag. Checking dr_mode
has been introduced to avoid a dual call to dwc2_lowlevel_hw_disable().
"ll_hw_enabled" should achieve the same (and is used currently in the
remove() routine).

Affected

36 ranges · showing 25

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.25-1 (bookworm)	linux 6.1.25-1 (bookworm)
linux	linux	—	—
linux	linux	—	—
linux	linux	—	—
linux	linux	—	—
linux	linux	—	—
linux	linux	—	—
linux	linux	—	—
linux	linux	—	—
linux	linux	>= 33a06f1300a79cfd461cea0268f05e969d4f34ec < 1f01027c51eb16145e8e07fafea3ca07ef102d06	1f01027c51eb16145e8e07fafea3ca07ef102d06
linux	linux	>= 33a06f1300a79cfd461cea0268f05e969d4f34ec < cba76e1fb896b573f09f51aa299223276a77bc90	cba76e1fb896b573f09f51aa299223276a77bc90
linux	linux	>= 33a06f1300a79cfd461cea0268f05e969d4f34ec < ffb8ab6f87bd28d700ab5c20d9d3a7e75067630d	ffb8ab6f87bd28d700ab5c20d9d3a7e75067630d
linux	linux	>= 33a06f1300a79cfd461cea0268f05e969d4f34ec < 6485fc381b6528b6f547ee1ff10bdbcbe31a6e4c	6485fc381b6528b6f547ee1ff10bdbcbe31a6e4c
linux	linux	>= 33a06f1300a79cfd461cea0268f05e969d4f34ec < f747313249b74f323ddf841a9c8db14d989f296a	f747313249b74f323ddf841a9c8db14d989f296a
linux	linux	>= 4.14.194 < 4.15	4.15
linux	linux	>= 4.19.140 < 4.20	4.20
linux	linux	>= 4.4.233 < 4.5	4.5
linux	linux	>= 4.9.233 < 4.10	4.10
linux	linux	>= 5.4.59 < 5.5	5.5
linux	linux	>= 5.7.16 < 5.8	5.8
linux	linux	>= 5.8.2 < 5.9	5.9
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.178-1	5.10.178-1
linux	linux_kernel	>= 0 < 6.1.25-1	6.1.25-1
linux	linux_kernel	>= 0 < 6.1.25-1	6.1.25-1

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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