linux-stable/drivers/peci
Iwona Winiarska 1c11289b34 peci: cpu: Fix use-after-free in adev_release()
When auxiliary_device_add() returns an error, auxiliary_device_uninit()
is called, which causes refcount for device to be decremented and
.release callback will be triggered.

Because adev_release() re-calls auxiliary_device_uninit(), it will cause
use-after-free:
[ 1269.455172] WARNING: CPU: 0 PID: 14267 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15
[ 1269.464007] refcount_t: underflow; use-after-free.

Reported-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com>
Link: https://lore.kernel.org/r/20220705101501.298395-1-iwona.winiarska@intel.com
2022-08-15 20:31:35 +02:00
..
controller peci: aspeed: fix error check return value of platform_get_irq() 2022-08-15 20:31:34 +02:00
core.c peci: Add support for PECI device drivers 2022-02-09 08:04:44 +01:00
cpu.c peci: cpu: Fix use-after-free in adev_release() 2022-08-15 20:31:35 +02:00
device.c peci: Add peci-cpu driver 2022-02-09 08:04:44 +01:00
internal.h peci: Add peci-cpu driver 2022-02-09 08:04:44 +01:00
Kconfig peci: Add peci-cpu driver 2022-02-09 08:04:44 +01:00
Makefile peci: Add peci-cpu driver 2022-02-09 08:04:44 +01:00
request.c peci: Add peci-cpu driver 2022-02-09 08:04:44 +01:00
sysfs.c peci: Add sysfs interface for PECI bus 2022-02-09 08:04:44 +01:00