{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90114",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.787Z",
        "datePublished": "2026-09-17T16:06:20.741Z",
        "dateUpdated": "2026-10-19T08:58:12.785Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:58:12.785Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: Reject descending VLAN tunnel ranges\n\nA pair of descending VLAN and tunnel IDs can pass the tunnel range span\ncheck. The VLAN subtraction produces a negative int, which is converted\nto unsigned when compared with the u32 tunnel ID subtraction. It can\ntherefore equal the wrapped tunnel ID delta.\n\nThe range loop then performs no iterations. Since the batched\nnotification handling added a post-loop error check, this leaves err\nuninitialized and makes the request's return value unpredictable.\n\nReject descending VLAN ranges before comparing the spans. Valid\nascending and single-entry ranges remain unchanged, while malformed\ndescending ranges consistently return -EINVAL.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bridge/br_netlink_tunnel.c"
                    ],
                    "versions": [
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "1181f6bad009408a259bab6aaf0681f11b487972",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "5a8e0e3a18b5e3172343b8479c5d04187f5b4795",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "0874a6d5275091429ec4c675c54c53a8776665ae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "4b0f5b25f114651f03058395b490626c4444875e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "c0444d7499f113d6b7803ef0175591464e17525e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "434849b21ef56b09d16e6366b2a230002f363e45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "94339443686b36d3223bc032b7947267474e2679",
                            "lessThan": "b74a072d8fb71d3c9ffba4a17d5943e63266fb38",
                            "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/bridge/br_netlink_tunnel.c"
                    ],
                    "versions": [
                        {
                            "version": "5.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.9",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1181f6bad009408a259bab6aaf0681f11b487972"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5a8e0e3a18b5e3172343b8479c5d04187f5b4795"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0874a6d5275091429ec4c675c54c53a8776665ae"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b0f5b25f114651f03058395b490626c4444875e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c0444d7499f113d6b7803ef0175591464e17525e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/434849b21ef56b09d16e6366b2a230002f363e45"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b74a072d8fb71d3c9ffba4a17d5943e63266fb38"
                }
            ],
            "title": "net: bridge: Reject descending VLAN tunnel ranges",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}