{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98709",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.365Z",
        "datePublished": "2026-10-18T15:46:39.290Z",
        "dateUpdated": "2026-10-21T12:55:58.274Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:55:58.274Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: count only matching reservations in reserved switch\n\nieee80211_vif_use_reserved_switch() validates a replacement by counting\nassigned links on ctx->replace_ctx and treating reservations too\nbroadly. A link can still be assigned to the old channel context while\nholding a reservation that belongs to a different replacement\noperation.\n\nThat can make the current replacement appear complete too early. If\nanother link finalizes first, the function can free the\nWILL_BE_REPLACED chanctx while the unmatched link and driver still use\nit, leading to a use-after-free in later beacon generation.\n\nRequire an in-place reservation to point at the current replacement\ncontext, and require the reserved and assigned contexts to be the\nmatching replacement pair, before counting or moving the link."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mac80211/chan.c"
                    ],
                    "versions": [
                        {
                            "version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
                            "lessThan": "4ae6ed5b6074df5f3da05fd74c40bb24c5c9b41d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
                            "lessThan": "d31f655e44631891788ca67018ec5e1ed1c7de86",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
                            "lessThan": "03525b632908b049f4d04cc8a71cdff2329589cf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
                            "lessThan": "5cc54a000960bc88f8c58940164dca0e601ab39c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f",
                            "lessThan": "437f3727b4fd715266c296435c116288f82666fd",
                            "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/chan.c"
                    ],
                    "versions": [
                        {
                            "version": "3.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "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": "3.17",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "7.2.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4ae6ed5b6074df5f3da05fd74c40bb24c5c9b41d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d31f655e44631891788ca67018ec5e1ed1c7de86"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03525b632908b049f4d04cc8a71cdff2329589cf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5cc54a000960bc88f8c58940164dca0e601ab39c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/437f3727b4fd715266c296435c116288f82666fd"
                }
            ],
            "title": "wifi: mac80211: count only matching reservations in reserved switch",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}