CVE-2026-64170
Published Jul 19, 2026
Description
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.
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References
Other References
https://git.kernel.org/stable/c/0bb3bd442f0bdad3932739a61dd6c580c9c1955e
https://git.kernel.org/stable/c/45760b72e84c1a1498f1a8a9047184c85299da20
https://git.kernel.org/stable/c/4bb4764f2c51f03f657a28029eb0595d8223aab5
https://git.kernel.org/stable/c/4f4051e9d644c371c50de4a042b85bba6727d5c3
https://git.kernel.org/stable/c/8f9b61d255b1e989b8913b06c8ebe0aba5e1b238
https://git.kernel.org/stable/c/9e673affb92c29d9ba879bf4ea81c5e840166b56
https://git.kernel.org/stable/c/a7e8f3efd50a165ba0189f6dc57f7e51a7d149db
https://git.kernel.org/stable/c/d577c55d189e7ae150973058d13e299b6855633f
Frequently Asked Questions
What is CVE-2026-64170? +
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.
How do I check if I'm vulnerable to CVE-2026-64170? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.