Vulnerability CVE-2021-47120
Published: 2024-03-15

Description:
In the Linux kernel, the following vulnerability has been resolved:

HID: magicmouse: fix NULL-deref on disconnect

Commit 9d7b18668956 ("HID: magicmouse: add support for Apple Magic
Trackpad 2") added a sanity check for an Apple trackpad but returned
success instead of -ENODEV when the check failed. This means that the
remove callback will dereference the never-initialised driver data
pointer when the driver is later unbound (e.g. on USB disconnect).

 References:
https://git.kernel.org/stable/c/368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6
https://git.kernel.org/stable/c/b5d013c4c76b276890135b5d32803c4c63924b77
https://git.kernel.org/stable/c/9cf27473f21913a3eaf4702dd2a25415afd5f33f
https://git.kernel.org/stable/c/4b4f6cecca446abcb686c6e6c451d4f1ec1a7497
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