{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90366",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.807Z",
        "datePublished": "2026-09-17T16:09:08.785Z",
        "dateUpdated": "2026-10-19T09:02:25.401Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:02:25.401Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV\n\nWhen a CSA countdown is active, mt7996_mcu_beacon_cntdwn() emits two\nbss_bcn_cntdwn_tlv entries (the CSA countdown and the CCA-abort BCC), but\nMT7996_BEACON_UPDATE_SIZE only reserved one. With MBSSID enabled and a\nnear-maximum beacon template the extra 8 bytes could push the offload\ncommand past MT7996_MAX_BSS_OFFLOAD_SIZE and trigger skb_over_panic().\nReserve room for both countdown TLVs."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/mediatek/mt76/mt7996/mcu.h"
                    ],
                    "versions": [
                        {
                            "version": "98686cd21624c75a043e96812beadddf4f6f48e5",
                            "lessThan": "1d348f96623ec20d700af7d4dfc00a74da6238ac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "98686cd21624c75a043e96812beadddf4f6f48e5",
                            "lessThan": "bc1d694a1ffe0062c3adf0db1d64ad54454398ec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "98686cd21624c75a043e96812beadddf4f6f48e5",
                            "lessThan": "45d8896e4cffffb2c6554ccbec6efe7a0d53166f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "98686cd21624c75a043e96812beadddf4f6f48e5",
                            "lessThan": "1a51aff0e048dc5b8252d65808b79939c942d6ec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "98686cd21624c75a043e96812beadddf4f6f48e5",
                            "lessThan": "50c66bab321140c49aa2ed779a3ec9d2f085b458",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/mediatek/mt76/mt7996/mcu.h"
                    ],
                    "versions": [
                        {
                            "version": "6.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "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": "6.2",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1d348f96623ec20d700af7d4dfc00a74da6238ac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bc1d694a1ffe0062c3adf0db1d64ad54454398ec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/45d8896e4cffffb2c6554ccbec6efe7a0d53166f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1a51aff0e048dc5b8252d65808b79939c942d6ec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/50c66bab321140c49aa2ed779a3ec9d2f085b458"
                }
            ],
            "title": "wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}