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

What is CVE-2026-64168?

CVE-2026-64168 is a medium-severity vulnerability in Linux kernel, published on 19 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2026-64168?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-64168?

Apply the vendor's patch.

Is CVE-2026-64168 being exploited?

There is no known exploitation of CVE-2026-64168 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-64168, DEBIAN-CVE-2026-64168, GHSA-5w89-7hjx-x8fr, UBUNTU-CVE-2026-64168.