CVE-2026-43461
spi: amlogic spifc-a4 DMA mapping error handling fix
Publication date: 2026-05-08
Last updated on: 2026-05-08
Assigner: kernel.org
Description
Description
CVSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| amlogic | spifc-a4 | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is related to the Linux kernel's amlogic spifc-a4 driver, specifically in the DMA (Direct Memory Access) mapping error handling within the aml_sfc_dma_buffer_setup() function.
- There was an unnecessary use of a goto statement when the first DMA mapping failed, which should have been a direct return instead.
- A double-unmap bug occurred where the code would unmap the same DMA address twice if the info DMA mapping failed.
- An incorrect unmap size was used in one error path, potentially causing incorrect DMA synchronization behavior.
These bugs have been fixed to ensure proper error handling and resource cleanup in the DMA mapping process.
How can this vulnerability impact me? :
Improper handling of DMA mapping errors can lead to resource mismanagement such as double unmapping or incorrect synchronization, which may cause system instability or crashes.
While the description does not specify direct security impacts like privilege escalation or data leakage, such bugs in kernel drivers can potentially lead to unpredictable behavior affecting system reliability.