CVE-2022-50263
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-09-15
Last updated on: 2025-12-02
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
vdpasim: fix memory leak when freeing IOTLBs
After commit bda324fd037a ("vdpasim: control virtqueue support"),
vdpasim->iommu became an array of IOTLB, so we should clean the
mappings of each free one by one instead of just deleting the ranges
in the first IOTLB which may leak maps.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 5.19 (inc) to 6.0.19 (exc) |
| linux | linux_kernel | From 6.1 (inc) to 6.1.5 (exc) |
| linux | linux_kernel | 6.2 |
| linux | linux_kernel | 6.2 |
Helpful Resources
Exploitability
CWE
KEV
| 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 a memory leak in the Linux kernel's vdpasim component related to IOTLB (Input-Output Translation Lookaside Buffer) management. After a certain code change, vdpasim's iommu became an array of IOTLBs, but the code only freed mappings in the first IOTLB instead of all of them, causing memory to leak.
How can this vulnerability impact me? :
The memory leak could lead to increased memory usage over time, potentially degrading system performance or causing resource exhaustion in systems using the affected Linux kernel component.
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