CVE-2026-64221
Published Jul 24, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: spi: ti-qspi: fix use-after-free after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to clear the DMA channel pointer also if buffer allocation fails to avoid passing a pointer to the released channel to the DMA engine (or trying to free the channel a second time on late 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/178b9b570c0f75fa7e691490520328b20d19138e
https://git.kernel.org/stable/c/1cd927002120678bd5d23c760246639caa53040e
https://git.kernel.org/stable/c/3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6
https://git.kernel.org/stable/c/9c6f306a8140962c7284197db54b96fdb5f468d6
https://git.kernel.org/stable/c/d6f422b122922d1abee907d673bcc990e5f3672d
https://git.kernel.org/stable/c/d7a076fb596c7b408ed6df74793a597990a6d860
https://git.kernel.org/stable/c/ea6ec3343e05f7937a53eb6d7617b3abdb4abc19
https://git.kernel.org/stable/c/f2dc841d7dc9063fe9b47ced869b1271e55052ae
Frequently Asked Questions
What is CVE-2026-64221? +
In the Linux kernel, the following vulnerability has been resolved:
spi: ti-qspi: fix use-after-free after DMA setup failure
The driver falls back to PIO mode if DMA setup fails during probe.
Make sure to clear the DMA channel pointer also if buffer allocation
fails to avoid passing a pointer to the released channel to the DMA
engine (or trying to free the channel a second time on late 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-2026-64221? +
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.