{"api_version":"1","generated_at":"2026-10-26T07:02:07+00:00","cve":"CVE-2026-90366","urls":{"html":"https://cve.report/CVE-2026-90366","api":"https://cve.report/api/cve/CVE-2026-90366.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90366","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90366"},"summary":{"title":"wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:35","updated_at":"2026-10-19 09:19:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bc1d694a1ffe0062c3adf0db1d64ad54454398ec","name":"https://git.kernel.org/stable/c/bc1d694a1ffe0062c3adf0db1d64ad54454398ec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/45d8896e4cffffb2c6554ccbec6efe7a0d53166f","name":"https://git.kernel.org/stable/c/45d8896e4cffffb2c6554ccbec6efe7a0d53166f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1d348f96623ec20d700af7d4dfc00a74da6238ac","name":"https://git.kernel.org/stable/c/1d348f96623ec20d700af7d4dfc00a74da6238ac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/50c66bab321140c49aa2ed779a3ec9d2f085b458","name":"https://git.kernel.org/stable/c/50c66bab321140c49aa2ed779a3ec9d2f085b458","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a51aff0e048dc5b8252d65808b79939c942d6ec","name":"https://git.kernel.org/stable/c/1a51aff0e048dc5b8252d65808b79939c942d6ec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90366","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90366","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 98686cd21624c75a043e96812beadddf4f6f48e5 1d348f96623ec20d700af7d4dfc00a74da6238ac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 98686cd21624c75a043e96812beadddf4f6f48e5 bc1d694a1ffe0062c3adf0db1d64ad54454398ec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 98686cd21624c75a043e96812beadddf4f6f48e5 45d8896e4cffffb2c6554ccbec6efe7a0d53166f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 98686cd21624c75a043e96812beadddf4f6f48e5 1a51aff0e048dc5b8252d65808b79939c942d6ec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 98686cd21624c75a043e96812beadddf4f6f48e5 50c66bab321140c49aa2ed779a3ec9d2f085b458 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/mediatek/mt76/mt7996/mcu.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1d348f96623ec20d700af7d4dfc00a74da6238ac","status":"affected","version":"98686cd21624c75a043e96812beadddf4f6f48e5","versionType":"git"},{"lessThan":"bc1d694a1ffe0062c3adf0db1d64ad54454398ec","status":"affected","version":"98686cd21624c75a043e96812beadddf4f6f48e5","versionType":"git"},{"lessThan":"45d8896e4cffffb2c6554ccbec6efe7a0d53166f","status":"affected","version":"98686cd21624c75a043e96812beadddf4f6f48e5","versionType":"git"},{"lessThan":"1a51aff0e048dc5b8252d65808b79939c942d6ec","status":"affected","version":"98686cd21624c75a043e96812beadddf4f6f48e5","versionType":"git"},{"lessThan":"50c66bab321140c49aa2ed779a3ec9d2f085b458","status":"affected","version":"98686cd21624c75a043e96812beadddf4f6f48e5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/mediatek/mt76/mt7996/mcu.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:02:25.401Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90366","datePublished":"2026-09-17T16:09:08.785Z","dateReserved":"2026-09-11T19:38:34.807Z","dateUpdated":"2026-10-19T09:02:25.401Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:35","lastModifiedDate":"2026-10-19 09:19:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90366","Ordinal":"1","Title":"wifi: mt76: mt7996: reserve space for the CSA-abort countdown TL","CVE":"CVE-2026-90366","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90366","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"wifi: mt76: mt7996: reserve space for the CSA-abort countdown TL"}]}}}