{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53238",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.393Z",
        "datePublished": "2026-06-25T08:39:34.492Z",
        "dateUpdated": "2026-06-25T08:39:34.492Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-25T08:39:34.492Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlabel: validate unlabeled address and mask attribute lengths\n\nnetlbl_unlabel_addrinfo_get() used the address attribute length to\ndetermine whether the attribute data could be read as an IPv4 or IPv6\naddress, but did not independently validate the corresponding mask\nattribute length.  A crafted Generic Netlink request could therefore\nprovide a valid IPv4/IPv6 address attribute with a shorter mask\nattribute, which would later be read as a full struct in_addr or\nstruct in6_addr.\n\nNLA_BINARY policy lengths are maximum lengths by default, so use\nNLA_POLICY_EXACT_LEN() for the unlabeled IPv4/IPv6 address and mask\nattributes.  This rejects short attributes during policy validation and\nalso exposes the exact length requirements through policy introspection."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/netlabel/netlabel_unlabeled.c"
                    ],
                    "versions": [
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "975a84fd741440853380d37465b6e226cf47254c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "672f0f3b8f875ffe6525a37847eafa7648c4c0c6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "95bda3eac0b1454c2cee98d58d9ba6dd8391e843",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "71c52da13c3737493b42d20d9f33de34e03b3156",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "ccfe292a966079c61ea68a2da303b2a336170993",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd",
                            "lessThan": "9772589b57e44aedc240211c5c3f7a684a034d3a",
                            "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/netlabel/netlabel_unlabeled.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.25",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.25",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.259",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.210",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.176",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.94",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.36",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.13",
                            "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": "2.6.25",
                                    "versionEndExcluding": "5.10.259"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "5.15.210"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "6.1.176"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "6.6.143"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "6.12.94"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "6.18.36"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "7.0.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.25",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/975a84fd741440853380d37465b6e226cf47254c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/672f0f3b8f875ffe6525a37847eafa7648c4c0c6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/95bda3eac0b1454c2cee98d58d9ba6dd8391e843"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/71c52da13c3737493b42d20d9f33de34e03b3156"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ccfe292a966079c61ea68a2da303b2a336170993"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9772589b57e44aedc240211c5c3f7a684a034d3a"
                }
            ],
            "title": "netlabel: validate unlabeled address and mask attribute lengths",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}