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| author | Dan Carpenter <dan.carpenter@linaro.org> | 2023-10-29 02:53:36 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 11:08:28 +0100 |
| commit | 303766bb92c5c225cf40f9bbbe7e29749406e2f2 (patch) | |
| tree | f646915e7ec6121d3edee2c6639b027038ace834 | |
| parent | 741e4c15d7c0b2c73bcbfb7f34a755ab9a9385c6 (diff) | |
| download | linux-303766bb92c5c225cf40f9bbbe7e29749406e2f2.tar.gz linux-303766bb92c5c225cf40f9bbbe7e29749406e2f2.tar.bz2 linux-303766bb92c5c225cf40f9bbbe7e29749406e2f2.zip | |
Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()
[ Upstream commit eb988e46da2e4eae89f5337e047ce372fe33d5b1 ]
The put_device() calls rmi_release_function() which frees "fn" so the
dereference on the next line "fn->num_of_irqs" is a use after free.
Move the put_device() to the end to fix this.
Fixes: 24d28e4f1271 ("Input: synaptics-rmi4 - convert irq distribution to irq_domain")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/706efd36-7561-42f3-adfa-dd1d0bd4f5a1@moroto.mountain
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/input/rmi4/rmi_bus.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c index 24f31a5c0e04..014bb40e8423 100644 --- a/drivers/input/rmi4/rmi_bus.c +++ b/drivers/input/rmi4/rmi_bus.c @@ -276,11 +276,11 @@ void rmi_unregister_function(struct rmi_function *fn) device_del(&fn->dev); of_node_put(fn->dev.of_node); - put_device(&fn->dev); for (i = 0; i < fn->num_of_irqs; i++) irq_dispose_mapping(fn->irq[i]); + put_device(&fn->dev); } /** |