CVE-2026-46192
spi: microchip-core-qspi emulated read-only operation vulnerability
Publication date: 2026-05-28
Last updated on: 2026-05-28
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microchip | microchip-core-qspi | * |
| microchip | core_qspi | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's microchip-core-qspi driver. It involves the driver attempting to transmit data during emulated read-only dual/quad SPI operations, which is unnecessary and problematic. The core should handle reads by generating clock cycles internally without transmitting any data. Transmitting garbage data during these operations can disrupt the transfer because QSPI lacks a dedicated master-out line, unlike regular SPI. This can cause the transfer to fail or become 'bricked' as the core may lose track of whether it should be sending or receiving data.
How can this vulnerability impact me? :
The impact of this vulnerability is that data transfers using the microchip-core-qspi driver in the Linux kernel can fail or become corrupted during read-only dual/quad SPI operations. This can lead to malfunctioning hardware communication or system instability where this driver is used, potentially causing devices relying on these transfers to not operate correctly.