{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98422",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.348Z",
        "datePublished": "2026-10-14T13:27:50.789Z",
        "dateUpdated": "2026-10-14T13:27:50.789Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-14T13:27:50.789Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset the AP_VLAN tailroom counter on ifdown\n\nOn ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from\nthe AP interface, but it's never decremented again unless the AP is\nalso brought down. Thus, bringing the same AP_VLAN up again will\nincrement the counter again and eventually hit the sanity check:\n\n  WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=\n               master->crypto_tx_tailroom_needed_cnt);\n\nReset it on ifdown to avoid that."
                }
            ],
            "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": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "b0b32d3f163d24ea7134380666193bf398e9dc0b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "f6b34a7d64324faf28eedc0f8678b0f832f1cc36",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "304a874670a0b6ab5589a7f60b4af0251797b121",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "7775759e3cb35ef5a571b2d877c2a9b70a5d5f08",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "3d76b45e8432c0d75fcb9e90d92eaa3176898adf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "4b54d01b48445b66c9e576de92b90a3a3ae7b34a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "875835377d8d62c849b4eb03a7abfafa71d7668f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
                            "lessThan": "4504f3960dc4501c73be9f99eabda2e26e9db41e",
                            "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": "4.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.1",
                            "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-rc4",
                            "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": "4.1",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "7.3-rc4"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b0b32d3f163d24ea7134380666193bf398e9dc0b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f6b34a7d64324faf28eedc0f8678b0f832f1cc36"
                },
                {
                    "url": "https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/875835377d8d62c849b4eb03a7abfafa71d7668f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e"
                }
            ],
            "title": "wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}