{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2022-48975",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpiolib: fix memory leak in gpiochip_setup_dev()\n\nHere is a backtrace report about memory leak detected in\ngpiochip_setup_dev():\n\nunreferenced object 0xffff88810b406400 (size 512):\n  comm \"python3\", pid 1682, jiffies 4295346908 (age 24.090s)\n  backtrace:\n    kmalloc_trace\n    device_add\t\tdevice_private_init at drivers/base/core.c:3361\n\t\t\t(inlined by) device_add at drivers/base/core.c:3411\n    cdev_device_add\n    gpiolib_cdev_register\n    gpiochip_setup_dev\n    gpiochip_add_data_with_key\n\ngcdev_register() & gcdev_unregister() would call device_add() &\ndevice_del() (no matter CONFIG_GPIO_CDEV is enabled or not) to\nregister/unregister device.\n\nHowever, if device_add() succeeds, some resource (like\nstruct device_private allocated by device_private_init())\nis not released by device_del().\n\nTherefore, after device_add() succeeds by gcdev_register(), it\nneeds to call put_device() to release resource in the error handle\npath.\n\nHere we move forward the register of release function, and let it\nrelease every piece of resource by put_device() instead of kfree().\n\nWhile at it, fix another subtle issue, i.e. when gc->ngpio is equal\nto 0, we still call kcalloc() and, in case of further error, kfree()\non the ZERO_PTR pointer, which is not NULL. It's not a bug per se,\nbut rather waste of the resources and potentially wrong expectation\nabout contents of the gdev->descs variable."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "159f3cd92f17",
                                            "version_value": "6daaa84b6214"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.6",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "4.6",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.83",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.0.13",
                                                        "lessThanOrEqual": "6.0.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
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        }
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/6daaa84b621485fe28c401be18debf92ae8ef04a",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/6daaa84b621485fe28c401be18debf92ae8ef04a"
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            {
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                "name": "https://git.kernel.org/stable/c/371363716398ed718e389bea8c5e9843a79dde4e"
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            {
                "url": "https://git.kernel.org/stable/c/ec851b23084b3a0af8bf0f5e51d33a8d678bdc49",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ec851b23084b3a0af8bf0f5e51d33a8d678bdc49"
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