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HID: nvidia-shield: Reference hid_device devm allocation of input_dev name

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Use hid_device for devm allocation of the input_dev name to avoid a
use-after-free. input_unregister_device would trigger devres cleanup of all
resources associated with the input_dev, free-ing the name. The name would
subsequently be used in a uevent fired at the end of unregistering the
input_dev.

Reported-by: Maxime Ripard <mripard@kernel.org>
Closes: https://lore.kernel.org/linux-input/ZOZIZCND+L0P1wJc@penguin/T/#m443f3dce92520f74b6cf6ffa8653f9c92643d4ae
Fixes: 09308562d4 ("HID: nvidia-shield: Initial driver implementation with Thunderstrike support")
Suggested-by: Maxime Ripard <mripard@kernel.org>
Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20230824061308.222021-4-sergeantsagara@protonmail.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
Rahul Rameshbabu 2023-08-24 06:14:54 +00:00 committed by Benjamin Tissoires
parent 4794394635
commit 197d314352
1 changed files with 1 additions and 1 deletions
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2
drivers/hid/hid-nvidia-shield.c
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@ -164,7 +164,7 @@ static struct input_dev *shield_allocate_input_dev(struct hid_device *hdev,
idev->id.product = hdev->product;
idev->id.version = hdev->version;
idev->uniq = hdev->uniq;
idev->name = devm_kasprintf(&idev->dev, GFP_KERNEL, "%s %s", hdev->name,
idev->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s %s", hdev->name,
name_suffix);
if (!idev->name)
goto err_name;