{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64087",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T07:54:57.032Z",
        "datePublished": "2026-07-19T15:39:57.371Z",
        "dateUpdated": "2026-07-19T15:39:57.371Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-19T15:39:57.371Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus/adm1266) reject implausible blackbox record_count\n\nadm1266_nvmem_read_blackbox() loops over a record_count that comes\nstraight from byte 3 of the BLACKBOX_INFO response.  The destination\nbuffer is data->dev_mem, sized for the nvmem cell's declared 2048\nbytes (ADM1266_BLACKBOX_MAX_RECORDS * ADM1266_BLACKBOX_SIZE = 32 * 64).\nA device that reports a record_count greater than 32 -- whether due\nto firmware bugs, bus corruption, or a non-responsive slave returning\n0xff -- would walk read_buff past the end of the dev_mem allocation\non the trailing iterations.\n\nCap record_count at ADM1266_BLACKBOX_MAX_RECORDS (introduced here)\nbefore entering the loop and return -EIO on any larger value, so a\nmalformed BLACKBOX_INFO response cannot drive the loop out of bounds."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hwmon/pmbus/adm1266.c"
                    ],
                    "versions": [
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "adcb163ad7cacca317872fc62bd8885e842e45e3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "c2c56092710fe8a893b67b5a3d7e62808d02d84d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "5469e1e7c411acc15fdd8262c99c3ebd9defd594",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "f85c81e93dbd6915970bd5f3bffcf62633c4c54c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "0e791cd0140fb136083565aadfbe0f705aa260d0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "75c862adf3d3caab4f49bb3530723c215376e37c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "231db52a5b64d0a9769e298dadc148e1f79b26a6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15609d1893020436e1e8ccfd9ded774a96dd17a2",
                            "lessThan": "4afca954622d672ea65ed961bed01cf91caa034e",
                            "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/adm1266.c"
                    ],
                    "versions": [
                        {
                            "version": "5.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.142",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.92",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.34",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.11",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "5.10",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.6.142"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.12.92"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.18.34"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "7.0.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/adcb163ad7cacca317872fc62bd8885e842e45e3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c2c56092710fe8a893b67b5a3d7e62808d02d84d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5469e1e7c411acc15fdd8262c99c3ebd9defd594"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f85c81e93dbd6915970bd5f3bffcf62633c4c54c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e791cd0140fb136083565aadfbe0f705aa260d0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/75c862adf3d3caab4f49bb3530723c215376e37c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/231db52a5b64d0a9769e298dadc148e1f79b26a6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4afca954622d672ea65ed961bed01cf91caa034e"
                }
            ],
            "title": "hwmon: (pmbus/adm1266) reject implausible blackbox record_count",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}