{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-52921",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.367Z",
        "datePublished": "2026-06-24T07:14:16.533Z",
        "dateUpdated": "2026-06-24T07:14:16.533Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-24T07:14:16.533Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: stop hash:* range iteration at end\n\nThe following hash set variants:\n\nhash:ip,mark\nhash:ip,port\nhash:ip,port,ip\nhash:ip,port,net\n\niterate IPv4 ranges with a 32-bit iterator.\n\nThe iterator must stop once the last address in the requested range has\nbeen processed. Advancing it once more can move the traversal state past\nthe end of the request, so a later retry may continue from an unintended\nposition.\n\nHandle the iterator increment explicitly at the end of the loop and stop\nonce the upper bound has been processed. This keeps the existing retry\nbehaviour intact for valid ranges while preventing traversal from\ncontinuing past the original boundary."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/netfilter/ipset/ip_set_hash_ipmark.c",
                        "net/netfilter/ipset/ip_set_hash_ipport.c",
                        "net/netfilter/ipset/ip_set_hash_ipportip.c",
                        "net/netfilter/ipset/ip_set_hash_ipportnet.c"
                    ],
                    "versions": [
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "be75218fadea22e59c8673db212f29c681bf45bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "383418c20e69f5761b6ec5238f599423f4fb77fb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "0d7b33ace701fe397e6e4de145f32e098178d901",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "c281e018af98df91827d65bec00f4956c00a1b02",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "02f75f041a93ea045834da89cd3234f4c1d749b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "952e988163c2ab9939c3db9f0f8e77af6a1bb436",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "48596a8ddc46f96afb6a2cd72787cb15d6bb01fc",
                            "lessThan": "0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6",
                            "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/netfilter/ipset/ip_set_hash_ipmark.c",
                        "net/netfilter/ipset/ip_set_hash_ipport.c",
                        "net/netfilter/ipset/ip_set_hash_ipportip.c",
                        "net/netfilter/ipset/ip_set_hash_ipportnet.c"
                    ],
                    "versions": [
                        {
                            "version": "4.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.14",
                            "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": "6.6.142",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.92",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.34",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.11",
                            "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": "4.14",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "6.6.142"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "6.12.92"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "6.18.34"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "7.0.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02"
                },
                {
                    "url": "https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6"
                }
            ],
            "title": "netfilter: ipset: stop hash:* range iteration at end",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}