{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80733",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.789Z",
        "datePublished": "2026-09-03T08:21:50.136Z",
        "dateUpdated": "2026-09-03T08:21:50.136Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-03T08:21:50.136Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE() from sk_mc_loop()\n\nsk_mc_loop() can be called for sockets that are neither AF_INET\nnor AF_INET6 (e.g. AF_PACKET sockets when sending packets via raw/packet\nsocket over virtual devices such as VRF or ipvlan).\n\nIn such cases, sk_family is not AF_INET/AF_INET6 and sk_mc_loop() falls\nthrough the switch statement and triggers WARN_ON_ONCE(1).\n\nNon-INET sockets do not support IP_MULTICAST_LOOP or IPV6_MULTICAST_LOOP\noptions, so loopback should default to true without generating a warning."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/sock.c"
                    ],
                    "versions": [
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                            "lessThan": "97133c4d42654578fab95abe47359ebe784dde18",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "lessThan": "f625c742b33dc137c209dd13d1c5f12b1c18d71c",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "lessThan": "ad7fa2f411cb30f63d6725f111be134064cdb718",
                            "status": "affected",
                            "versionType": "git"
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                            "lessThan": "d2adc4e80b29e58b5162ae09f0f657a215806c8c",
                            "status": "affected",
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                        },
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                            "lessThan": "0d75f2c1d0764efa756ad9c1e078d8c09ea8fc1f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f60e5990d9c1424af9dbca60a23ba2a1c7c1ce90",
                            "lessThan": "b8a39a09ae4eaae04309e1e38ed6a1101d967496",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c91f81773cd4bbebfe744e9ab30a7ce093f9b930",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8c30b2b17f2133e953850c547e3902c3a3d80e2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3fe207e4637a2e792c46a08666aa722f77d7f8f7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.14.40",
                            "lessThan": "3.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "3.18.13",
                            "lessThan": "3.19",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "3.19.6",
                            "lessThan": "3.20",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/sock.c"
                    ],
                    "versions": [
                        {
                            "version": "4.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.152",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.104",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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                            "negate": false,
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                                    "vulnerable": true,
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/97133c4d42654578fab95abe47359ebe784dde18"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f625c742b33dc137c209dd13d1c5f12b1c18d71c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ad7fa2f411cb30f63d6725f111be134064cdb718"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d2adc4e80b29e58b5162ae09f0f657a215806c8c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ad7dbb1d14b1b4406eca8ef9478e8de312ba0cfe"
                },
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                    "url": "https://git.kernel.org/stable/c/0d75f2c1d0764efa756ad9c1e078d8c09ea8fc1f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b8a39a09ae4eaae04309e1e38ed6a1101d967496"
                }
            ],
            "title": "net: remove WARN_ON_ONCE() from sk_mc_loop()",
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