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CVE-2026-46200: spi: mpc52xx: fix controller deregistration

• 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: 2026-05-28 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: spi: mpc52xx: fix controller deregistration Make sure to deregister the controller before disabling and releasing underlying resources like interrupts and gpios during driver unbind.

Affected products

• Linux kernel: from 2.6.33 before 6.12.90; from 6.13 before 6.18.32; from 6.19 before 7.0.9 — fixed in 6.12.90, 6.18.32, 7.0.9
• Linux: 2.6.33 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 6.12.90, 6.18.32, 7.0.9; Linux 7.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0f997fdae819a8c2cc83bd4ff7d935ad76c727c9
• https://git.kernel.org/stable/c/28f28a0f4e327f792c230493a0ea00389ff68ff5
• https://git.kernel.org/stable/c/7fea80d93bfd34051b2ac1cec07766c87d8d28be
• https://git.kernel.org/stable/c/a3669f678d0ee8b686d3eea4c0ed9817c9374945
• https://git.kernel.org/stable/c/c6e3b9f5dcb80fe4d3f1e470f79a91a3cc526cee
• https://git.kernel.org/stable/c/ff2979c57b70be6d8b64e40d7b4217341a877fcd

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