{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72391",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.924Z",
        "datePublished": "2026-08-15T05:56:19.842Z",
        "dateUpdated": "2026-08-17T05:13:45.125Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:13:45.125Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy\n\nsfp_i2c_mdiobus_create() allocates the I2C MDIO bus with mdio_i2c_alloc(),\na plain (non-devm) allocation, and registers it. sfp_i2c_mdiobus_destroy()\nonly unregisters the bus and clears sfp->i2c_mii without calling\nmdiobus_free(). As the only reference to the bus is then cleared, the\nstruct mii_bus is leaked.\n\nThis is hit whenever a copper/RollBall SFP module that instantiated an MDIO\nbus is removed: sfp_sm_main() takes the global teardown path and calls\nsfp_i2c_mdiobus_destroy(). sfp_cleanup(), on driver unbind, frees\nsfp->i2c_mii directly, which is why the leak only triggered on module\nhot-removal and not on unbind.\n\nFree the bus in sfp_i2c_mdiobus_destroy() to match the allocation done in\nsfp_i2c_mdiobus_create()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/phy/sfp.c"
                    ],
                    "versions": [
                        {
                            "version": "e85b1347ace677c3822c12d9332dfaaffe594da6",
                            "lessThan": "92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e85b1347ace677c3822c12d9332dfaaffe594da6",
                            "lessThan": "d2c37f26d1a37f8177be5f354537f8ee3ec31cc2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e85b1347ace677c3822c12d9332dfaaffe594da6",
                            "lessThan": "3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e85b1347ace677c3822c12d9332dfaaffe594da6",
                            "lessThan": "86d379fcf1b79bdf4bc2ac891297f30f63d041d8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e85b1347ace677c3822c12d9332dfaaffe594da6",
                            "lessThan": "2381bf3f484e8e4fd89a225445872ec14e036ab5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e85b1347ace677c3822c12d9332dfaaffe594da6",
                            "lessThan": "8f31efff9206f9f0adb853cad6916086aac4d5ef",
                            "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/net/phy/sfp.c"
                    ],
                    "versions": [
                        {
                            "version": "6.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "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": "6.1",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/92dd9a522f01ef57f633a8c1953cf6d48ef2bcd5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d2c37f26d1a37f8177be5f354537f8ee3ec31cc2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3183b6f5510c876a1c4b4a6bdc3d0ad8940fe742"
                },
                {
                    "url": "https://git.kernel.org/stable/c/86d379fcf1b79bdf4bc2ac891297f30f63d041d8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2381bf3f484e8e4fd89a225445872ec14e036ab5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8f31efff9206f9f0adb853cad6916086aac4d5ef"
                }
            ],
            "title": "net: phy: sfp: free mii_bus in sfp_i2c_mdiobus_destroy",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}