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CVE-2026-43460: spi: rockchip-sfc: Fix double-free in remove() callback

• 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: 2026-05-08 · updated 2026-06-17
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: spi: rockchip-sfc: Fix double-free in remove() callback The driver uses devm_spi_register_controller() for registration, which automatically unregisters the controller via devm cleanup when the device is removed. The manual call to spi_unregister_controller() in the remove() callback can lead to a double-free. And to make sure controller is unregistered before DMA buffer is unmapped, switch to use spi_register_controller() in probe().

Affected products

• Linux kernel: from 6.14 before 6.18.19; from 6.19 before 6.19.9; 7.0-rc1, 7.0-rc2, 7.0-rc3 — fixed in 6.18.19, 6.19.9

How to fix

Upgrade to a fixed version: Linux kernel 6.18.19, 6.19.9. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/111e2863372c322e836e0c896f6dd9cf4ee08c71
• https://git.kernel.org/stable/c/85fb53351e6a3b921357a2178671e847a087e400
• https://git.kernel.org/stable/c/b6051f2bdd4bd3dde85b68558edd3a6843489221

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