CVE-2025-38266 Information

Jul 12, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

pinctrl: mediatek: eint: Fix invalid pointer dereference for v1 platforms

Commit 3ef9f710efcb (\pinctrl: mediatek: Add EINT support for multiple addresses) introduced an access to the ‘soc’ field of struct mtk_pinctrl in mtk_eint_do_init() and for that an include of pinctrl-mtk-common-v2.h.

However pinctrl drivers relying on the v1 common driver include pinctrl-mtk-common.h instead which provides another definition of struct mtk_pinctrl that does not contain an ‘soc’ field.

Since mtk_eint_do_init() can be called both by v1 and v2 drivers it will now try to dereference an invalid pointer when called on v1 platforms. This has been observed on Genio 350 EVK (MT8365) which crashes very early in boot (the kernel trace can only be seen with earlycon).

In order to fix this since ‘struct mtk_pinctrl’ was only needed to get a ‘struct mtk_eint_pin’ make ‘struct mtk_eint_pin’ a parameter of mtk_eint_do_init() so that callers need to supply it removing mtk_eint_do_init()’s dependency on any particular ‘struct mtk_pinctrl’.

Reference

https://git.kernel.org/stable/c/1c9977b263475373b31bbf86af94a5c9ae2be42c https://git.kernel.org/stable/c/9ebe21ede792cef851847648962c363cac67d17f

CNNVD-202507-1388 (Published: 2025-07-10)

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