CVE-2025-22016 Information

Description

In the Linux kernel the following vulnerability has been resolved:

dpll: 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 (pin).

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/3614bf90130d60f191a5fe218d04f6251c678e13 https://git.kernel.org/stable/c/4d350043be684762e581d9bdd32d543621d01a9c https://git.kernel.org/stable/c/cb2f8a5c1fd9e7a1fefa23afe20570e16da1ada4