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| author | Duoming Zhou <duoming@zju.edu.cn> | 2024-05-09 17:37:02 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-05-13 16:09:38 -0700 |
| commit | 36e56b1b002bb26440403053f19f9e1a8bc075b2 (patch) | |
| tree | 023eee5e51da1a8265604386d12404705367eac8 /drivers/usb/cdns3/cdns3-imx.c | |
| parent | b505e0319852b08a3a716b64620168eab21f4ced (diff) | |
ax25: Fix reference count leak issue of net_device
There is a reference count leak issue of the object "net_device" in
ax25_dev_device_down(). When the ax25 device is shutting down, the
ax25_dev_device_down() drops the reference count of net_device one
or zero times depending on if we goto unlock_put or not, which will
cause memory leak.
In order to solve the above issue, decrease the reference count of
net_device after dev->ax25_ptr is set to null.
Fixes: d01ffb9eee4a ("ax25: add refcount in ax25_dev to avoid UAF bugs")
Suggested-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/7ce3b23a40d9084657ba1125432f0ecc380cbc80.1715247018.git.duoming@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-imx.c')
0 files changed, 0 insertions, 0 deletions