Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: microchip-core-qspi: don't attempt to transmit during emulated read-only dual/quad operations The core will deal with reads by creating clock cycles itself, there's no need to generate clock cycles by transmitting garbage data at the driver level. Further, transmitting garbage data just bricks the transfer since QSPI doesn't have a dedicated master-out line like MOSI in regular SPI. I'm not entirely sure if the transfer is bricked because of the garbage data being transmitted on the bus or because the core loses track of whether it is supposed to be sending or receiving data.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.17, < 6.18.30 |
References
- https://git.kernel.org/stable/c/67184f361ab4d9fac6d2b8d5fed6649d496038a4Patch
- https://git.kernel.org/stable/c/eb56deaabf127e8985fc91fa6c97bf8a3b062844Patch
- https://git.kernel.org/stable/c/ec9d0ddbde6003c303fa5e1d5cd48952852984d8Patch
FAQ
What is CVE-2026-46192?
CVE-2026-46192 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: spi: microchip-core-qspi: don't attempt to transmit during emulated read-only dual/quad operations The core will deal with reads b...
How severe is CVE-2026-46192?
CVE-2026-46192 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46192?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.