漏洞信息
# pinctrl: mediatek: eint: 修正 v1 平台的无效指针引用
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漏洞标题
pinctrl: mediatek: eint: Fix invalid pointer dereference for v1 platforms
漏洞描述信息
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'.
CVSS信息
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漏洞类别
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漏洞标题
Linux kernel 安全漏洞
漏洞描述信息
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞,该漏洞源于pinctrl-mediatek中的无效指针取消引用问题,可能导致系统崩溃。
CVSS信息
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漏洞类别
其他