{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74547",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.915Z",
        "datePublished": "2026-08-15T12:27:55.777Z",
        "dateUpdated": "2026-08-19T16:38:37.219Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-19T16:38:37.219Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (adt7470) Fix busy-loop and I2C flooding in update thread\n\nWhen userspace configures 'auto_update_interval' to 0 via sysfs, the\nbackground kthread executes schedule_timeout_interruptible(0), which\nreturns immediately.\n\nIf 'num_temp_sensors' is concurrently or previously set to 0, the\nmsleep_interruptible() delay inside adt7470_read_temperatures() also\nbecomes 0. This combination forces the background thread into a tight,\nunbounded busy-loop, hogging the CPU and flooding the I2C bus with a\ncontinuous stream of transactions.\n\nFix this vulnerability by raising the lower limit of the clamp_val in\nauto_update_interval_store() from 0 to 500 milliseconds. This guarantees\na reasonable minimum sleep window between sensor updates, protecting the\nsystem from intentional or accidental I2C bus denial of service."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hwmon/adt7470.c"
                    ],
                    "versions": [
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "4dc1518f9cc57c6db99514cafeb02dd7117d5bda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "1325975a2eab265510e6036d8bf0c0068373d332",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "1a42bd72a66205e439db1d1142442b62d393408a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "38e6b5ce5794ff09442231cc171c2be5e900bab3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "82d65f7ef11edcea0228745440b8b4b1f222c34c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "5ea299c3aa42a827f6a863eeead6de3525bbb17a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89fac11cb3e7c5860c425dba14845c09ccede39d",
                            "lessThan": "cb0b7f9c43b0abbd422a7e4c2c85e91db429207c",
                            "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/adt7470.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.29",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.29",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.151",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.103",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.44",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.8",
                            "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": "2.6.29",
                                    "versionEndExcluding": "5.10.265"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "5.15.216"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.1.183"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.6.151"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
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                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.1.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4dc1518f9cc57c6db99514cafeb02dd7117d5bda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1325975a2eab265510e6036d8bf0c0068373d332"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1a42bd72a66205e439db1d1142442b62d393408a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/38e6b5ce5794ff09442231cc171c2be5e900bab3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/82d65f7ef11edcea0228745440b8b4b1f222c34c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5ea299c3aa42a827f6a863eeead6de3525bbb17a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cb0b7f9c43b0abbd422a7e4c2c85e91db429207c"
                }
            ],
            "title": "hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread",
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}