Linux Kernel SPI EP93XX DMA Deref Fix
CVE-2026-64169 Published on July 19, 2026
spi: ep93xx: fix error pointer deref after DMA setup failure
In the Linux kernel, the following vulnerability has been resolved:
spi: ep93xx: 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 on later probe errors or driver
unbind.
This issue was flagged by Sashiko when reviewing a devres allocation
conversion patch.
Products Associated with CVE-2026-64169
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Affected Versions
Linux:- Version e79e7c2df6277ee1ad9364a231f6183da4492415 and below b6c0dabea07e25bd7db19a77ebfd0d02b9e2671a is affected.
- Version e79e7c2df6277ee1ad9364a231f6183da4492415 and below 8e027db9fa310b1d5e7ad928510be800c4f004d9 is affected.
- Version e79e7c2df6277ee1ad9364a231f6183da4492415 and below 0e2189ab095e3657f37b8295f3f2bbcde0f27529 is affected.
- Version e79e7c2df6277ee1ad9364a231f6183da4492415 and below 5e121a81667a83e9a01d62b429e340f5a4a84abc is affected.
- Version 6.12 is affected.
- Before 6.12 is unaffected.
- Version 6.12.92, <= 6.12.* is unaffected.
- Version 6.18.34, <= 6.18.* is unaffected.
- Version 7.0.11, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.