CVE-2026-64170: spi: qup: fix error pointer deref after DMA setup failure
In the Linux kernel, the following vulnerability has been resolved:
spi: qup: fix error pointer deref after DMA setup failure
The driver falls back to PIO mode if DMA setup fails during probe.
Make sure to the clear the DMA channel pointers on setup failure to avoid dereferencing an error pointer (or attempting to release a channel a second time) on later probe errors or driver unbind.
This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64170?
CVE-2026-64170 has a risk rating of 27.
How do I fix CVE-2026-64170?
To fix CVE-2026-64170, update your Linux kernel to the latest version in which this vulnerability is resolved.
What systems are affected by CVE-2026-64170?
CVE-2026-64170 affects Linux kernel versions where the spi: qup driver is utilized.
What type of vulnerability is CVE-2026-64170?
CVE-2026-64170 is a vulnerability related to a potential error pointer dereference after a DMA setup failure.
When was CVE-2026-64170 published?
CVE-2026-64170 was published on July 19, 2026.