{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2021-47186",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-03-25T09:12:14.113Z",
        "datePublished": "2024-04-10T18:56:26.297Z",
        "dateUpdated": "2026-05-11T13:49:38.587Z"
    },
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                "dateUpdated": "2026-05-11T13:49:38.587Z"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: check for null after calling kmemdup\n\nkmemdup can return a null pointer so need to check for it, otherwise\nthe null key will be dereferenced later in tipc_crypto_key_xmit as\ncan be seen in the trace [1].\n\n\n[1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58"
                }
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                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/tipc/crypto.c"
                    ],
                    "versions": [
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                            "status": "affected",
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
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                            "status": "affected"
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                        {
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                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.82",
                            "lessThanOrEqual": "5.10.*",
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                            "version": "5.15.5",
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                        },
                        {
                            "version": "5.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
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                                {
                                    "vulnerable": true,
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                                {
                                    "vulnerable": true,
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916"
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            ],
            "title": "tipc: check for null after calling kmemdup",
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        "adp": [
            {
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                "metrics": [
                    {
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-04-15T14:53:12.521984Z",
                                "id": "CVE-2021-47186",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-02-21T17:04:55.843Z"
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                    "dateUpdated": "2024-08-04T05:32:07.381Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
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