{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31650",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.128Z",
        "datePublished": "2026-04-24T14:45:03.210Z",
        "dateUpdated": "2026-10-21T12:39:38.649Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:39:38.649Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: vub300: fix use-after-free on disconnect\n\nThe vub300 driver maintains an explicit reference count for the\ncontroller and its driver data and the last reference can in theory be\ndropped after the driver has been unbound.\n\nThis specifically means that the controller allocation must not be\ndevice managed as that can lead to use-after-free.\n\nNote that the lifetime is currently also incorrectly tied the parent USB\ndevice rather than interface, which can lead to memory leaks if the\ndriver is unbound without its device being physically disconnected (e.g.\non probe deferral).\n\nFix both issues by reverting to non-managed allocation of the controller."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/mmc/host/vub300.c"
                    ],
                    "versions": [
                        {
                            "version": "117a9c589ce0cf68065c007a02fd94da01e1181a",
                            "lessThan": "4b5251eebc2b1dedbb33fedf1b1109fea161b846",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dcfdd698dc521c6046e9b80c16281575efb25d23",
                            "lessThan": "ea7468f61be033f4e18b95f2912010ed1d175d75",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dcfdd698dc521c6046e9b80c16281575efb25d23",
                            "lessThan": "ef0448c569b37ceabdd038e9faa311e5179127b0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dcfdd698dc521c6046e9b80c16281575efb25d23",
                            "lessThan": "8f4d20a710225ec7a565f6a0459862d3b1f32330",
                            "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/mmc/host/vub300.c"
                    ],
                    "versions": [
                        {
                            "version": "6.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.23",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.13",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.17",
                                    "versionEndExcluding": "6.18.23"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "6.19.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4b5251eebc2b1dedbb33fedf1b1109fea161b846"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ea7468f61be033f4e18b95f2912010ed1d175d75"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ef0448c569b37ceabdd038e9faa311e5179127b0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8f4d20a710225ec7a565f6a0459862d3b1f32330"
                }
            ],
            "title": "mmc: vub300: fix use-after-free on disconnect",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}