CVE-2025-22017 Information

Description

In the Linux kernel the following vulnerability has been resolved:

devlink: fix xa_alloc_cyclic() error handling

In case of returning 1 from xa_alloc_cyclic() (wrapping) ERR_PTR(1) will be returned which will cause IS_ERR() to be false. Which can lead to dereference not allocated pointer (rel).

Fix it by checking if err is lower than zero.

This wasn’t found in real usecase only noticed. Credit to Pierre.

Reference

https://git.kernel.org/stable/c/466132f6d28a7e47a82501fe1c46b8f90487412e https://git.kernel.org/stable/c/f3b97b7d4bf316c3991e5634c9f4847c2df35478 https://git.kernel.org/stable/c/f8aaa38cfaf6f20afa4db36b6529032fb69165dc