Vulnerabilities > CVE-2021-47120 - NULL Pointer Dereference vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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).
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://git.kernel.org/stable/c/368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6
- https://git.kernel.org/stable/c/368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6
- https://git.kernel.org/stable/c/4b4f6cecca446abcb686c6e6c451d4f1ec1a7497
- https://git.kernel.org/stable/c/4b4f6cecca446abcb686c6e6c451d4f1ec1a7497
- https://git.kernel.org/stable/c/9cf27473f21913a3eaf4702dd2a25415afd5f33f
- https://git.kernel.org/stable/c/9cf27473f21913a3eaf4702dd2a25415afd5f33f
- https://git.kernel.org/stable/c/b5d013c4c76b276890135b5d32803c4c63924b77
- https://git.kernel.org/stable/c/b5d013c4c76b276890135b5d32803c4c63924b77