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CVE-2026-46241: spi: mpc52xx: fix use-after-free on registration failure

• Severity: high (CVSS 7.8 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: 2026-05-28 · updated 2026-10-30
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: spi: mpc52xx: fix use-after-free on registration failure Make sure to disable and free the interrupts in case controller registration fails to avoid a potential use-after-free and resource leak. This issue was flagged by Sashiko when reviewing a controller deregistration fix.

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/336d9ad7560b3baba17af06727a888040ee93390
• https://git.kernel.org/stable/c/5c77f11b9b5f1ad5a704dad875260c44016ede10
• https://git.kernel.org/stable/c/8b49b6aadd0c622ca7d68b4a53ae10362e221cf3
• https://git.kernel.org/stable/c/b25eb3d24d03e571f09c04a0522c798ea35e48a1
• https://git.kernel.org/stable/c/dd74a790818ebb9a2be3a94ac935a374755cd278
• https://git.kernel.org/stable/c/f62c060272b9d7423b1650b844e8e4e7b8f9f925

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