What’s Vulnerable › Vulnerabilities

CVE-2022-49893: cxl/region: Fix cxl_region leak, cleanup targets at region delete

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-01 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix cxl_region leak, cleanup targets at region delete When a region is deleted any targets that have been previously assigned to that region hold references to it. Trigger those references to drop by detaching all targets at unregister_region() time. Otherwise that region object will leak as userspace has lost the ability to detach targets once region sysfs is torn down.

Affected products

• Linux kernel: from 6.0 before 6.0.8; 6.1-rc1, 6.1-rc2, 6.1-rc3 — fixed in 6.0.8

How to fix

Upgrade to a fixed version: Linux kernel 6.0.8. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0d9e734018d70cecf79e2e4c6082167160a0f13f
• https://git.kernel.org/stable/c/45d9fb4b758b9d602ee7776eb6754b0349946aad

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