{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68405",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.390Z",
        "datePublished": "2026-08-10T12:04:25.241Z",
        "dateUpdated": "2026-08-19T16:34:57.265Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-19T16:34:57.265Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock\n\nieee80211_do_stop() removes AP_VLAN packets from the parent AP\nps->bc_buf while holding ps->bc_buf.lock with IRQs disabled. It then\ncalls ieee80211_free_txskb() before dropping the lock.\n\nieee80211_free_txskb() is not just a passive SKB release. For SKBs with\nTX status state it can report a dropped frame through cfg80211/nl80211,\nand that path can reach netlink tap transmit. This is the same reason\nthe pending queue cleanup in ieee80211_do_stop() already unlinks SKBs\nunder the queue lock and frees them after IRQ state is restored.\n\nThe buggy scenario involves two paths, with each column showing the\norder within that path:\n\nAP_VLAN management TX:             AP_VLAN stop:\n1. attach ACK-status state         1. clear the running state\n2. queue a multicast SKB on        2. take ps->bc_buf.lock with IRQs\n   parent ps->bc_buf                  disabled\n                                   3. unlink the AP_VLAN SKB\n                                   4. call ieee80211_free_txskb()\n\nUnlink matching AP_VLAN SKBs from ps->bc_buf under the existing lock,\nbut move them to a local free queue. Drop the lock and restore IRQ state\nbefore calling ieee80211_free_txskb().\n\nWARNING: kernel/softirq.c:430 at __local_bh_enable_ip"
                }
            ],
            "affected": [
                {
                    "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": [
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "0d2619e708e2ef02ba1c91642ea261d3f19d8f9a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "659a81b62a61440b85e02c09903be861ae7679e5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "aa01ef0ebbc3289154229ef58e65baf289eb9789",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "962f755a47d7ec3bbf6c709697d7f4c5f798441d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "a424985c3ef2a87ce6057a853e18d0c441a86be8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "4b8abf43bf34791c99d99dc3be13f897adefc461",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "397a7a24ef8c2967a3e8090013f9c54714110c48",
                            "lessThan": "f3858d5b1432098c1936e03d6e03dd0e33facf60",
                            "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/mac80211/iface.c"
                    ],
                    "versions": [
                        {
                            "version": "3.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.9",
                            "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": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "3.9",
                                    "versionEndExcluding": "5.10.265"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "5.15.216"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "6.1.183"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "6.6.148"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "6.12.101"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "6.18.42"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "7.1.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.9",
                                    "versionEndExcluding": "7.2"
                                }
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                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0d2619e708e2ef02ba1c91642ea261d3f19d8f9a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/659a81b62a61440b85e02c09903be861ae7679e5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aa01ef0ebbc3289154229ef58e65baf289eb9789"
                },
                {
                    "url": "https://git.kernel.org/stable/c/be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef"
                },
                {
                    "url": "https://git.kernel.org/stable/c/962f755a47d7ec3bbf6c709697d7f4c5f798441d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a424985c3ef2a87ce6057a853e18d0c441a86be8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b8abf43bf34791c99d99dc3be13f897adefc461"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f3858d5b1432098c1936e03d6e03dd0e33facf60"
                }
            ],
            "title": "wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}