CVE-2026-31529
Received Received - Intake
Memory Leak in Linux Kernel cxl/region Component Fixed

Publication date: 2026-04-22

Last updated on: 2026-04-28

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix leakage in __construct_region() Failing the first sysfs_update_group() needs to explicitly kfree the resource as it is too early for cxl_region_iomem_release() to do so.
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Meta Information
Published
2026-04-22
Last Modified
2026-04-28
Generated
2026-06-16
AI Q&A
2026-04-22
EPSS Evaluated
2026-06-14
NVD
CVE-2026-31529
EUVD
EUVD-2026-24923
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel From 6.19 (inc) to 6.19.11 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is in the Linux kernel, specifically in the cxl/region component. It involves a leakage issue in the __construct_region() function. When the first sysfs_update_group() call fails, the resource is not properly freed early enough, because it is too soon for the cxl_region_iomem_release() function to handle the cleanup. This can lead to resource leakage.

Impact Analysis

The impact of this vulnerability is resource leakage within the Linux kernel's cxl/region subsystem. This could potentially lead to increased memory usage or resource exhaustion, which might degrade system performance or stability.

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