What’s Vulnerable › Vulnerabilities

CVE-2025-68238: mtd: rawnand: cadence: fix DMA device NULL pointer dereference

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-16 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: cadence: fix DMA device NULL pointer dereference The DMA device pointer `dma_dev` was being dereferenced before ensuring that `cdns_ctrl->dmac` is properly initialized. Move the assignment of `dma_dev` after successfully acquiring the DMA channel to ensure the pointer is valid before use.

Affected products

• Linux kernel: from 5.10.235 before 5.10.247; from 5.15.179 before 5.15.197; from 6.1.130 before 6.1.159; from 6.6.80 before 6.6.118; from 6.12.17 before 6.12.60; from 6.13.5 before 6.14 — fixed in 5.10.247, 5.15.197, 6.1.159, 6.12.60, 6.14, 6.18

How to fix

Upgrade to a fixed version: Linux kernel 5.10.247, 5.15.197, 6.1.159, 6.12.60. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0c2a43cb43786011b48eeab6093db14888258c6b
• https://git.kernel.org/stable/c/0c635241a62f2f5da1b48bfffae226d1f86a76ef
• https://git.kernel.org/stable/c/2178b0255eae108bb10e5e99658b28641bc06f43
• https://git.kernel.org/stable/c/5c56bf214af85ca042bf97f8584aab2151035840
• https://git.kernel.org/stable/c/9c58c64ec41290c12490ca7e1df45013fbbb41fd
• https://git.kernel.org/stable/c/b146e0b085d9d6bfe838e0a15481cba7d093c67f
• https://git.kernel.org/stable/c/e282a4fdf3c6ee842a720010a8b5f7d77bedd126

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