{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46234",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.106Z",
        "datePublished": "2026-05-28T09:40:58.373Z",
        "dateUpdated": "2026-10-15T01:21:22.279Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T18:04:40.556Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: fix buffer size clamping order\n\nIn vsock_update_buffer_size(), the buffer size was being clamped to the\nmaximum first, and then to the minimum. If a user sets a minimum buffer\nsize larger than the maximum, the minimum check overrides the maximum\ncheck, inverting the constraint.\n\nThis breaks the intended socket memory boundaries by allowing the\nvsk->buffer_size to grow beyond the configured vsk->buffer_max_size.\n\nFix this by checking the minimum first, and then the maximum. This\nensures the buffer size never exceeds the buffer_max_size."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/vmw_vsock/af_vsock.c"
                    ],
                    "versions": [
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "f6ec135941d2c1c2dbb87b5ce1783f4f6ac6ccca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "caf11dfea5233a69298a1c448bbf8d1639c80536",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "01ef69785dc3162f588a361ab770b1e312800188",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "a998a7e250bf976539e05a00ec64a81292afecaa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "310da27932dd0afe7ce7456dfe1f0814c3301f41",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "2602f7bb5818e92315feeaeb71d8ce4d5c9ab160",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "0b68881501460c3761f196469e1e503218c5e536",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97",
                            "lessThan": "d114bfdc9b76bf93b881e195b7ec957c14227bab",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/vmw_vsock/af_vsock.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "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": "6.6.140",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.90",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.32",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.9",
                            "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": "5.5",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.6.140"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.12.90"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.18.32"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "7.0.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f6ec135941d2c1c2dbb87b5ce1783f4f6ac6ccca"
                },
                {
                    "url": "https://git.kernel.org/stable/c/caf11dfea5233a69298a1c448bbf8d1639c80536"
                },
                {
                    "url": "https://git.kernel.org/stable/c/01ef69785dc3162f588a361ab770b1e312800188"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a998a7e250bf976539e05a00ec64a81292afecaa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/310da27932dd0afe7ce7456dfe1f0814c3301f41"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2602f7bb5818e92315feeaeb71d8ce4d5c9ab160"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0b68881501460c3761f196469e1e503218c5e536"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d114bfdc9b76bf93b881e195b7ec957c14227bab"
                }
            ],
            "title": "vsock: fix buffer size clamping order",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "x_adpType": "supplier",
                "providerMetadata": {
                    "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
                    "shortName": "siemens-SADP",
                    "dateUpdated": "2026-10-15T01:21:22.279Z"
                },
                "affected": [
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "0",
                                "lessThan": "*",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    }
                ],
                "references": [
                    {
                        "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
                    }
                ]
            }
        ]
    }
}