CVE-2026-31529
Memory Leak in Linux Kernel cxl/region Component Fixed
Publication date: 2026-04-22
Last updated on: 2026-04-28
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| 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) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.