What’s Vulnerable › Vulnerabilities

CVE-2026-63861: spi: mtk-snfi: unregister ECC engine on probe failure and remove() callback

• Severity: medium (CVSS 5.5 v3.1)
• 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: 2026-07-19 · updated 2026-10-26

Description

In the Linux kernel, the following vulnerability has been resolved: spi: mtk-snfi: unregister ECC engine on probe failure and remove() callback mtk_snand_probe() registers the on-host NAND ECC engine, but teardown was missing from both probe unwind and remove-time cleanup. Add a devm cleanup action after successful registration so nand_ecc_unregister_on_host_hw_engine() runs automatically on probe failures and during device removal.

Affected products

• Linux kernel: from 5.19 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10 — fixed in 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10
• Linux kernel: 5.19 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 6.1.175, 6.6.141, 6.12.91, 6.18.33; Linux kernel 7.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3e79a563377a319d016ed0d3cd8c43171670c0f3
• https://git.kernel.org/stable/c/6aea4a99410615912d80a4ba0827c4e8d4a8312d
• https://git.kernel.org/stable/c/86357e1d0157d8408b78f8768a69ab263d010316
• https://git.kernel.org/stable/c/98cf4b58299e0c6a537c68cd32155d9e7569e7cb
• https://git.kernel.org/stable/c/ab00febad191d7a4400aa1c3468279fb508258d4
• https://git.kernel.org/stable/c/e0b049bd7b279d7b6ad22a637cddced93198a51b

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