{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90344",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.804Z",
        "datePublished": "2026-09-17T16:08:54.311Z",
        "dateUpdated": "2026-10-19T09:02:01.149Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:02:01.149Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: disconnect on CSA to channel 0\n\nThe refactor for the CSA parsing erroneously equates channel\nzero and no information present, leading it to ignore a CSA\non an AP that advertises a switch to that (invalid) channel.\nThis leads to not disconnecting, which we should. For Intel\ndevices, this can lead to a firmware crash.\n\nFix this by using an int type for the channel number as well\nas the opclass, and using a (negative) value that cannot be\nencoded in the element to indicate it's not present."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mac80211/spectmgmt.c"
                    ],
                    "versions": [
                        {
                            "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
                            "lessThan": "099aadb2012d7490bc584cc5075ef11cbc33f2c3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
                            "lessThan": "e7bc5ab93acd1c3f54feeb9fa19ead3530168090",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
                            "lessThan": "eef374088450bb91626e133c7172b8a0e969a522",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21c3f8f95554feff9bed15703e89adbe582e0383",
                            "lessThan": "cf57f0a674cc3e3cda1a789359cc1238b61b9d7d",
                            "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/spectmgmt.c"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "6.9",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/099aadb2012d7490bc584cc5075ef11cbc33f2c3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e7bc5ab93acd1c3f54feeb9fa19ead3530168090"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eef374088450bb91626e133c7172b8a0e969a522"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cf57f0a674cc3e3cda1a789359cc1238b61b9d7d"
                }
            ],
            "title": "wifi: mac80211: disconnect on CSA to channel 0",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}