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authorRahul Rameshbabu <sergeantsagara@protonmail.com>2023-08-24 09:14:17 +0300
committerBenjamin Tissoires <bentiss@kernel.org>2023-08-24 16:57:57 +0300
commitdd613a4e45f8d35f49a63a2064e5308fa5619e29 (patch)
treee1aaa46564407c78a0a5ec4b2b7606adf6a168bf /drivers/hid/hid-multitouch.c
parent1d7546042f8fdc4bc39ab91ec966203e2d64f8bd (diff)
downloadlinux-dd613a4e45f8d35f49a63a2064e5308fa5619e29.tar.xz
HID: uclogic: Correct devm device reference for hidinput input_dev name
Reference the HID device rather than the input device for the devm allocation of the input_dev name. Referencing the input_dev would lead to a use-after-free when the input_dev was unregistered and subsequently fires a uevent that depends on the name. At the point of firing the uevent, the name would be freed by devres management. Use devm_kasprintf to simplify the logic for allocating memory and formatting the input_dev name string. Reported-by: syzbot+3a0ebe8a52b89c63739d@syzkaller.appspotmail.com Closes: https://lore.kernel.org/linux-input/ZOZIZCND+L0P1wJc@penguin/T/ Reported-by: Maxime Ripard <mripard@kernel.org> Closes: https://lore.kernel.org/linux-input/ZOZIZCND+L0P1wJc@penguin/T/#m443f3dce92520f74b6cf6ffa8653f9c92643d4ae Fixes: cce2dbdf258e ("HID: uclogic: name the input nodes based on their tool") Suggested-by: Maxime Ripard <mripard@kernel.org> Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com> Reviewed-by: Maxime Ripard <mripard@kernel.org> Link: https://lore.kernel.org/r/20230824061308.222021-2-sergeantsagara@protonmail.com Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'drivers/hid/hid-multitouch.c')
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