| commit | 6b3f0df8ff91bc2554a2687c8d850b7ed4c7f369 | |
| author | Johan Hovold <johan@kernel.org> | |
| Mon, 1 Jun 2020 13:39:46 +0000 (1 15:39 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Fri, 21 Aug 2020 09:01:54 +0000 (21 11:01 +0200) | ||
| tree | e0a11fd523719843c0ba7e8b0449058c856f9e6e | treesnapshot (tar.gz zip) |
| parent | 6de8169aad63f10d1dc25ffd23713337c181a759 | commitdiff |
leds: da903x: fix use-after-free on unbind
commit 6f4aa35744f69ed9b0bf5a736c9ca9b44bc1dcea upstream.
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot blindly do devres conversions
so that deregistration ends up being tied to the parent device,
something which leads to use-after-free on driver unbind when the class
device is released while still being registered.
Fixes: eed16255d66b ("leds: da903x: Use devm_led_classdev_register")
Cc: stable <stable@vger.kernel.org> # 4.6
Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6f4aa35744f69ed9b0bf5a736c9ca9b44bc1dcea upstream.
Several MFD child drivers register their class devices directly under
the parent device. This means you cannot blindly do devres conversions
so that deregistration ends up being tied to the parent device,
something which leads to use-after-free on driver unbind when the class
device is released while still being registered.
Fixes: eed16255d66b ("leds: da903x: Use devm_led_classdev_register")
Cc: stable <stable@vger.kernel.org> # 4.6
Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/leds/leds-da903x.c | diffblobblamehistory |