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CVE-2026-64168: spi: sprd: fix error pointer deref after DMA setup failure

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-19 · updated 2026-08-13
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: spi: sprd: fix error pointer deref after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to check the dma.enabled flag before trying to release the DMA channels also on late probe errors to avoid dereferencing an error pointer (or attempting to release a channel a second time). This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.

Affected products

• Linux kernel: from 5.1 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.142; from 6.7 before 6.12.92; from 6.13 before 6.18.34 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.92, 6.18.34, 6.6.142

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.92. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0cdea166c1a07c200caf9d0b722224fca43b23ae
• https://git.kernel.org/stable/c/3d67fffb74267772d461c02c67f1eff893ad547d
• https://git.kernel.org/stable/c/450c319dd04d0eeff4184889768f7ada826a2e35
• https://git.kernel.org/stable/c/a8f233fb0c7be29b97cd249f64120bf35ce72805
• https://git.kernel.org/stable/c/b6f1acf4e57ccf708cdc0cb70f5bb5b65162963b
• https://git.kernel.org/stable/c/be409d2bbe9ca7da7b05cc7dde7499bc481f0766
• https://git.kernel.org/stable/c/be74e276111f3c23b8e040c8c5e308f67a573add
• https://git.kernel.org/stable/c/c33b4496e95d04722055446c0a31213639438536

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