{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53219",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.392Z",
        "datePublished": "2026-06-25T08:39:21.730Z",
        "dateUpdated": "2026-06-25T08:39:21.730Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-25T08:39:21.730Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: x_tables: avoid leaking percpu counter pointers\n\nThe native and compat get-entries paths copy the fixed rule entry header\nfrom the kernelized rule blob to userspace before overwriting the entry's\ncounter fields with a sanitized counter snapshot.\n\nOn SMP kernels, entry->counters.pcnt contains the percpu allocation\naddress used by x_tables rule counters. A caller can provide a userspace\nbuffer that faults during the initial fixed-header copy after pcnt has\nbeen copied but before the later sanitized counter copy runs. The syscall\nthen returns -EFAULT while leaving the raw percpu pointer in userspace.\n\nCopy only the fixed entry prefix before counters from the kernelized rule\nblob, then copy the sanitized counter snapshot into the counter field.\nApply this ordering to the IPv4, IPv6, and ARP native and compat\nget-entries implementations so a fault cannot expose the internal percpu\ncounter pointer."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/netfilter/arp_tables.c",
                        "net/ipv4/netfilter/ip_tables.c",
                        "net/ipv6/netfilter/ip6_tables.c"
                    ],
                    "versions": [
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "b74ba3343eb44b2cbf7e9665918c287df1d52ebb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "0b35dc8527ccc16b7dc34e8a3164313e68cd4e45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "b28e2fcad3db7e8687b15bc20bced26b5b7c920e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "a0d16941adf3a501956d74aefd8d6e217906e79c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "8d67e42ad3b1a95a152541015a07110e06992d6c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "08a3e218064db11f154ad9ad5541751ea7f34ebe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "fb0521aff1e10e300d89725cc439d3ea74c828c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "71ae0dff02d756e4d2ca710b79f2ff5390029a5f",
                            "lessThan": "f7f2fbb0e893a0238dc464f8d8c0f5609bec584f",
                            "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/ipv4/netfilter/arp_tables.c",
                        "net/ipv4/netfilter/ip_tables.c",
                        "net/ipv6/netfilter/ip6_tables.c"
                    ],
                    "versions": [
                        {
                            "version": "4.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.2",
                            "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": "4.2",
                                    "versionEndExcluding": "5.10.259"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "5.15.210"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.1.176"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.6.143"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.12.94"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "6.18.36"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "7.0.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b74ba3343eb44b2cbf7e9665918c287df1d52ebb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0b35dc8527ccc16b7dc34e8a3164313e68cd4e45"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b28e2fcad3db7e8687b15bc20bced26b5b7c920e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a0d16941adf3a501956d74aefd8d6e217906e79c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8d67e42ad3b1a95a152541015a07110e06992d6c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/08a3e218064db11f154ad9ad5541751ea7f34ebe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fb0521aff1e10e300d89725cc439d3ea74c828c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f7f2fbb0e893a0238dc464f8d8c0f5609bec584f"
                }
            ],
            "title": "netfilter: x_tables: avoid leaking percpu counter pointers",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}