{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-100081",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.456Z",
        "datePublished": "2026-11-06T18:23:02.185Z",
        "dateUpdated": "2026-11-06T19:08:43.050Z"
    },
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                "shortName": "Linux",
                "dateUpdated": "2026-11-06T18:23:02.185Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: defer xenvif_mcast_addr_list_free()\n\nIn order for the function to legitimately avoid locking/RCU, it needs to\nrun after all TX/RX processing has finished/stopped: Lookups happen from\nxenvif_start_xmit(), while adds/removes happen from xenvif_tx_action()\n(called out of xenvif_poll()).\n\nMove the call out of xenvif_disconnect_data() (the call to the function\nfrom connect()'s error path doesn't require any cleaning up there), and\nput it past the synchronization point in backend_disconnect().\n\nThis is XSA-527 / CVE-2026-100081."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/xen-netback/interface.c",
                        "drivers/net/xen-netback/xenbus.c"
                    ],
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                            "version": "b17075d5c1988b83f840d272c795ac17d57ce804",
                            "lessThan": "96e05a8ce243e2207704e2e7a6e7d1172730f515",
                            "status": "affected",
                            "versionType": "git"
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                        {
                            "version": "b17075d5c1988b83f840d272c795ac17d57ce804",
                            "lessThan": "0e786123e46d08d2247ce93a5435e45ed9f4c5d1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b17075d5c1988b83f840d272c795ac17d57ce804",
                            "lessThan": "990d123d9eaa3ac6c979eed245658676d65ce0db",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b17075d5c1988b83f840d272c795ac17d57ce804",
                            "lessThan": "0d515c409033c8e2a645a781be3ca76ab825fc8c",
                            "status": "affected",
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                            "lessThan": "a6bb2f1fa62c56279bdcdadce28d1310c5e12b62",
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                        },
                        {
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                            "lessThan": "34f0f63dc6dc11895a17bb5672451b6b11622c99",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b17075d5c1988b83f840d272c795ac17d57ce804",
                            "lessThan": "fb38fc58acb26d74fe8f7b19621fafaae3c040ff",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/xen-netback/interface.c",
                        "drivers/net/xen-netback/xenbus.c"
                    ],
                    "versions": [
                        {
                            "version": "4.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.274",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.225",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.192",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.162",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.116",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.62",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3.3",
                            "lessThanOrEqual": "7.3.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/96e05a8ce243e2207704e2e7a6e7d1172730f515"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e786123e46d08d2247ce93a5435e45ed9f4c5d1"
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                    "url": "https://git.kernel.org/stable/c/0d515c409033c8e2a645a781be3ca76ab825fc8c"
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                {
                    "url": "https://git.kernel.org/stable/c/34f0f63dc6dc11895a17bb5672451b6b11622c99"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fb38fc58acb26d74fe8f7b19621fafaae3c040ff"
                }
            ],
            "title": "xen-netback: defer xenvif_mcast_addr_list_free()",
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        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/11/06/10"
                    },
                    {
                        "url": "http://xenbits.xen.org/xsa/advisory-527.html"
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