{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2021-47225",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-04-10T18:59:19.529Z",
        "datePublished": "2024-05-21T14:19:30.212Z",
        "dateUpdated": "2026-05-11T13:50:22.960Z"
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                "dateUpdated": "2026-05-11T13:50:22.960Z"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: fix deadlock in AP/VLAN handling\n\nSyzbot reports that when you have AP_VLAN interfaces that are up\nand close the AP interface they belong to, we get a deadlock. No\nsurprise - since we dev_close() them with the wiphy mutex held,\nwhich goes back into the netdev notifier in cfg80211 and tries to\nacquire the wiphy mutex there.\n\nTo fix this, we need to do two things:\n 1) prevent changing iftype while AP_VLANs are up, we can't\n    easily fix this case since cfg80211 already calls us with\n    the wiphy mutex held, but change_interface() is relatively\n    rare in drivers anyway, so changing iftype isn't used much\n    (and userspace has to fall back to down/change/up anyway)\n 2) pull the dev_close() loop over VLANs out of the wiphy mutex\n    section in the normal stop case"
                }
            ],
            "affected": [
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                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mac80211/iface.c"
                    ],
                    "versions": [
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                            "version": "a05829a7222e9d10c416dd2dbbf3929fe6646b89",
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                            "status": "affected",
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                            "lessThan": "d5befb224edbe53056c2c18999d630dafb4a08b9",
                            "status": "affected",
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                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mac80211/iface.c"
                    ],
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                            "version": "5.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
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                            "version": "5.12.13",
                            "lessThanOrEqual": "5.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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                {
                    "nodes": [
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                            "operator": "OR",
                            "negate": false,
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "5.12.13"
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "5.13"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8043903fcb72f545c52e3ec74d6fd82ef79ce7c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d5befb224edbe53056c2c18999d630dafb4a08b9"
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            "title": "mac80211: fix deadlock in AP/VLAN handling",
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                    {
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                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 5.5,
                            "attackVector": "LOCAL",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "NONE"
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-05-31T18:48:57.781631Z",
                                "id": "CVE-2021-47225",
                                "options": [
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                "title": "CVE Program Container",
                "references": [
                    {
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