CVE-2025-68222

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> pinctrl: s32cc: fix uninitialized memory in s32_pinctrl_desc<br /> <br /> s32_pinctrl_desc is allocated with devm_kmalloc(), but not all of its<br /> fields are initialized. Notably, num_custom_params is used in<br /> pinconf_generic_parse_dt_config(), resulting in intermittent allocation<br /> errors, such as the following splat when probing i2c-imx:<br /> <br /> WARNING: CPU: 0 PID: 176 at mm/page_alloc.c:4795 __alloc_pages_noprof+0x290/0x300<br /> [...]<br /> Hardware name: NXP S32G3 Reference Design Board 3 (S32G-VNP-RDB3) (DT)<br /> [...]<br /> Call trace:<br /> __alloc_pages_noprof+0x290/0x300 (P)<br /> ___kmalloc_large_node+0x84/0x168<br /> __kmalloc_large_node_noprof+0x34/0x120<br /> __kmalloc_noprof+0x2ac/0x378<br /> pinconf_generic_parse_dt_config+0x68/0x1a0<br /> s32_dt_node_to_map+0x104/0x248<br /> dt_to_map_one_config+0x154/0x1d8<br /> pinctrl_dt_to_map+0x12c/0x280<br /> create_pinctrl+0x6c/0x270<br /> pinctrl_get+0xc0/0x170<br /> devm_pinctrl_get+0x50/0xa0<br /> pinctrl_bind_pins+0x60/0x2a0<br /> really_probe+0x60/0x3a0<br /> [...]<br /> __platform_driver_register+0x2c/0x40<br /> i2c_adap_imx_init+0x28/0xff8 [i2c_imx]<br /> [...]<br /> <br /> This results in later parse failures that can cause issues in dependent<br /> drivers:<br /> <br /> s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c0-pins/i2c0-grp0: could not parse node property<br /> s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c0-pins/i2c0-grp0: could not parse node property<br /> [...]<br /> pca953x 0-0022: failed writing register: -6<br /> i2c i2c-0: IMX I2C adapter registered<br /> s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c2-pins/i2c2-grp0: could not parse node property<br /> s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c2-pins/i2c2-grp0: could not parse node property<br /> i2c i2c-1: IMX I2C adapter registered<br /> s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c4-pins/i2c4-grp0: could not parse node property<br /> s32g-siul2-pinctrl 4009c240.pinctrl: /soc@0/pinctrl@4009c240/i2c4-pins/i2c4-grp0: could not parse node property<br /> i2c i2c-2: IMX I2C adapter registered<br /> <br /> Fix this by initializing s32_pinctrl_desc with devm_kzalloc() instead of<br /> devm_kmalloc() in s32_pinctrl_probe(), which sets the previously<br /> uninitialized fields to zero.