CVE-2022-49289 Information

Description

In the Linux kernel the following vulnerability has been resolved:

uaccess: fix integer overflow on access_ok()

Three architectures check the end of a user access against the address limit without taking a possible overflow into account. Passing a negative length or another overflow in here returns success when it should not.

Use the most common correct implementation here which optimizes for a constant ‘size’ argument and turns the common case into a single comparison.

Reference

https://git.kernel.org/stable/c/222ca305c9fd39e5ed8104da25c09b2b79a516a8 https://git.kernel.org/stable/c/99801e2f457824955da4aadaa035913a6dede03a https://git.kernel.org/stable/c/a1ad747fc1a0e06d1bf26b996ee8a56b5c8d02d8 https://git.kernel.org/stable/c/e65d28d4e9bf90a35ba79c06661a572a38391dec