What’s Vulnerable › Vulnerabilities

CVE-2026-68466: mtd: rawnand: lpc32xx_slc: fail DMA transfer on completion timeout

• Severity: high (CVSS 8.8 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: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: lpc32xx_slc: fail DMA transfer on completion timeout lpc32xx_xmit_dma() waits for the DMA completion callback but ignores wait_for_completion_timeout(). A timed out DMA transfer is therefore unmapped and reported as successful to the NAND read/write path. Return -ETIMEDOUT when the completion wait expires. Terminate the DMA channel before unmapping the scatterlist so the timed out transfer cannot continue to access the buffer after the error is returned.

Affected products

• Linux kernel: 3.7 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/17a8ce84964f243c8f89dc7353ac7e8d3137bc74
• https://git.kernel.org/stable/c/307e4f4c1d4e1575b3495ecc6e41aa2adc40f491
• https://git.kernel.org/stable/c/623c4d8e740debb4af28981e3d4e209f9d0260a4
• https://git.kernel.org/stable/c/8f5c3ee53a5dc1a0f7cfd780485f2c8b5d17f91d
• https://git.kernel.org/stable/c/bd4a622786f92e1f183f7557ab89dd32891cef60
• https://git.kernel.org/stable/c/c367af37ce7238c96c6071337149099467160746
• https://git.kernel.org/stable/c/cb2031f8b226efbd13735c07b075e5f14ec11f6d
• https://git.kernel.org/stable/c/cf7258f57d18026b8f77c0e80ff1805e9caf7250

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