{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38086",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:23.981Z",
        "datePublished": "2025-06-28T07:52:58.293Z",
        "dateUpdated": "2026-05-11T21:20:59.045Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:20:59.045Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ch9200: fix uninitialised access during mii_nway_restart\n\nIn mii_nway_restart() the code attempts to call\nmii->mdio_read which is ch9200_mdio_read(). ch9200_mdio_read()\nutilises a local buffer called \"buff\", which is initialised\nwith control_read(). However \"buff\" is conditionally\ninitialised inside control_read():\n\n        if (err == size) {\n                memcpy(data, buf, size);\n        }\n\nIf the condition of \"err == size\" is not met, then\n\"buff\" remains uninitialised. Once this happens the\nuninitialised \"buff\" is accessed and returned during\nch9200_mdio_read():\n\n        return (buff[0] | buff[1] << 8);\n\nThe problem stems from the fact that ch9200_mdio_read()\nignores the return value of control_read(), leading to\nuinit-access of \"buff\".\n\nTo fix this we should check the return value of\ncontrol_read() and return early on error."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/usb/ch9200.c"
                    ],
                    "versions": [
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "119766de4930ff40db9f36b960cb53b0c400e81b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "33163c68d2e3061fa3935b5f0a1867958b1cdbd2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "9da3e442714f7f4393ff01c265c4959c03e88c2f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "9a350f30d65197354706b7759b5c89d6c267b1a9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "6bd2569d0b2f918e9581f744df0263caf73ee76c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "4da7fcc098218ff92b2e83a43f545c02f714cedd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "cdaa6d1cb2ff1219c6c822b27655dd170ffb0f72",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4a476bd6d1d923922ec950ddc4c27b279f6901eb",
                            "lessThan": "9ad0452c0277b816a435433cca601304cfac7c21",
                            "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/usb/ch9200.c"
                    ],
                    "versions": [
                        {
                            "version": "4.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.295",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.239",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.186",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.142",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.95",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.35",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.4",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16",
                            "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": "4.3",
                                    "versionEndExcluding": "5.4.295"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "5.10.239"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "5.15.186"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.1.142"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.6.95"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.12.35"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.15.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.16"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/119766de4930ff40db9f36b960cb53b0c400e81b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/33163c68d2e3061fa3935b5f0a1867958b1cdbd2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9da3e442714f7f4393ff01c265c4959c03e88c2f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9a350f30d65197354706b7759b5c89d6c267b1a9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6bd2569d0b2f918e9581f744df0263caf73ee76c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4da7fcc098218ff92b2e83a43f545c02f714cedd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cdaa6d1cb2ff1219c6c822b27655dd170ffb0f72"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9ad0452c0277b816a435433cca601304cfac7c21"
                }
            ],
            "title": "net: ch9200: fix uninitialised access during mii_nway_restart",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
                    },
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2025-11-03T17:33:56.167Z"
                }
            }
        ]
    }
}