CVE-2025-22017 devlink: fix xa_alloc_cyclic() error handling

What is CVE-2025-22017?

CVE-2025-22017 is a medium-severity vulnerability in Linux kernel, published on 8 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2025-22017?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-22017?

Apply the vendor's patch.

Is CVE-2025-22017 being exploited?

There is no known exploitation of CVE-2025-22017 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-22017, DEBIAN-CVE-2025-22017, GHSA-mfpv-c7r6-4q9w, ROOT-OS-UBUNTU-2404-CVE-2025-22017, UBUNTU-CVE-2025-22017.