{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98370",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.344Z",
        "datePublished": "2026-10-06T08:46:54.981Z",
        "dateUpdated": "2026-10-19T09:18:22.245Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:18:22.245Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix compat ALLOCSPI request use-after-free\n\nxfrm_state_netlink() builds the ALLOCSPI response with\ndump_one_state(), which already calls alloc_compat() with the response\nskb and header.\n\nxfrm_alloc_userspi() then calls alloc_compat() again, but passes the\noriginal request skb and its header. For a compat request, the\ntranslator therefore interprets the 228-byte compat xfrm_userspi_info\nas the 232-byte native layout and reads four bytes past the declared\npayload. It also publishes the translated child through the request's\nfrag_list.\n\nA multicast clone of the request shares skb_shared_info and can observe\nthat child. xfrm_user_rcv_msg() frees it after the request handler\nreturns, racing a compat receiver which may still be copying from it and\nresulting in a use-after-free.\n\nRemove the redundant conversion. The response keeps its correct compat\ntranslation from dump_one_state(), and no child is attached to the\ninbound request."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/xfrm/xfrm_user.c"
                    ],
                    "versions": [
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "494f2bee9d8d0ebcfa249ac41bed7fed26d119b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "lessThan": "17893987e52918c23945c42e47e894a936305a25",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "bb63ab52a18273ec68340ac49aebbaa7b514ccd5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "248433942155b42a0ef04a5806c8aca024ea7c33",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "e70f639aee2ff0def155c256cace9e0f81d998e2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3",
                            "lessThan": "d1ebd9081879fd9ae9c8fb7e8928f19cc88ae320",
                            "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/xfrm/xfrm_user.c"
                    ],
                    "versions": [
                        {
                            "version": "5.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.54",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.8",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.10",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
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                                    "versionStartIncluding": "5.10",
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                                    "versionStartIncluding": "5.10",
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                                    "versionStartIncluding": "5.10",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/494f2bee9d8d0ebcfa249ac41bed7fed26d119b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/17893987e52918c23945c42e47e894a936305a25"
                },
                {
                    "url": "https://git.kernel.org/stable/c/42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bb63ab52a18273ec68340ac49aebbaa7b514ccd5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/248433942155b42a0ef04a5806c8aca024ea7c33"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e70f639aee2ff0def155c256cace9e0f81d998e2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1ebd9081879fd9ae9c8fb7e8928f19cc88ae320"
                }
            ],
            "title": "xfrm: fix compat ALLOCSPI request use-after-free",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}