{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74711",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.928Z",
        "datePublished": "2026-08-22T15:33:07.779Z",
        "dateUpdated": "2026-08-22T15:33:07.779Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-22T15:33:07.779Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus) Fix type confusion in notification logic\n\nSashiko reports:\n\nAt the start of the loop in pmbus_notify(), the code unconditionally casts\nevery attribute to a struct sensor_device_attribute:\n\ndrivers/hwmon/pmbus/pmbus_core.c:pmbus_notify() {\n    for (i = 0; i < data->num_attributes; i++) {\n        struct device_attribute *da = to_dev_attr(data->group.attrs[i]);\n        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);\n        int index = attr->index;\n...\n}\n\nHowever, data->group.attrs can contain other types like struct\npmbus_samples_reg or struct pmbus_sensor, which only embed a base\nstruct device_attribute.\n\nIf da is a struct pmbus_samples_reg, dev_attr is the last member. Casting\nit to struct sensor_device_attribute and reading the index field appears\nto access memory past the end of the allocation, which might trigger a\nslab-out-of-bounds read.\n\nAdditionally, if da is a struct pmbus_sensor, casting it causes the index\nfield to overlap with the page, phase, and reg fields. Could this produce\na garbage mask on little-endian systems that spuriously matches the target\nreg, page, and flags during an alert?\n\nFix the problem by using struct sensor_device_attr in struct pmbus_sensor\nand struct pmbus_label. Since those attributes never trigger a\nnotification, set the value of attr->index to -1 for them. Use this value\nto distinguish from boolean attributes which _can_ trigger a notification\nand use the index field to encode mask, page, and register values."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hwmon/pmbus/pmbus_core.c"
                    ],
                    "versions": [
                        {
                            "version": "f469bde9afd136598a0c4edc054296e6046f90ee",
                            "lessThan": "821f6416e69782fa662aff94b5ea52c943042790",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f469bde9afd136598a0c4edc054296e6046f90ee",
                            "lessThan": "0b121de89a99c54bcf516999b04e8531c84f08d5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f469bde9afd136598a0c4edc054296e6046f90ee",
                            "lessThan": "59bd68ab05a8f9c9a60b6ec44682084184803ff4",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hwmon/pmbus/pmbus_core.c"
                    ],
                    "versions": [
                        {
                            "version": "6.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "6.18.45"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "7.1.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/821f6416e69782fa662aff94b5ea52c943042790"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0b121de89a99c54bcf516999b04e8531c84f08d5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/59bd68ab05a8f9c9a60b6ec44682084184803ff4"
                }
            ],
            "title": "hwmon: (pmbus) Fix type confusion in notification logic",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}