{"api_version":"1","generated_at":"2026-10-21T23:53:02+00:00","cve":"CVE-2026-98702","urls":{"html":"https://cve.report/CVE-2026-98702","api":"https://cve.report/api/cve/CVE-2026-98702.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98702","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98702"},"summary":{"title":"wifi: mac80211: reject invalid 320 MHz CSA bandwidth","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reject invalid 320 MHz CSA bandwidth\n\nThe HT/VHT channel definition validator can receive a 320 MHz\nbandwidth indication from a received CSA frame on a non-6 GHz link.\nIt warns for this unsupported width but continues with an uninitialized\nvht_operation.chan_width, which is then read by\nieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a\nreceived frame panic the kernel.\n\nReject the channel definition before entering the VHT operation\nconversion. This preserves the existing CSA fallback while avoiding\nboth the warning and the uninitialized read.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:23","updated_at":"2026-10-19 10:19:34"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/56e236759f0a8dc910c2ae7cd3c161f298ee5794","name":"https://git.kernel.org/stable/c/56e236759f0a8dc910c2ae7cd3c161f298ee5794","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c","name":"https://git.kernel.org/stable/c/79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16","name":"https://git.kernel.org/stable/c/cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1892e71aa2e5ee667d87c6e49e3661f5e290303b","name":"https://git.kernel.org/stable/c/1892e71aa2e5ee667d87c6e49e3661f5e290303b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98702","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98702","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 21c3f8f95554feff9bed15703e89adbe582e0383 cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 21c3f8f95554feff9bed15703e89adbe582e0383 1892e71aa2e5ee667d87c6e49e3661f5e290303b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 21c3f8f95554feff9bed15703e89adbe582e0383 79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 21c3f8f95554feff9bed15703e89adbe582e0383 56e236759f0a8dc910c2ae7cd3c161f298ee5794 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 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":["net/mac80211/spectmgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16","status":"affected","version":"21c3f8f95554feff9bed15703e89adbe582e0383","versionType":"git"},{"lessThan":"1892e71aa2e5ee667d87c6e49e3661f5e290303b","status":"affected","version":"21c3f8f95554feff9bed15703e89adbe582e0383","versionType":"git"},{"lessThan":"79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c","status":"affected","version":"21c3f8f95554feff9bed15703e89adbe582e0383","versionType":"git"},{"lessThan":"56e236759f0a8dc910c2ae7cd3c161f298ee5794","status":"affected","version":"21c3f8f95554feff9bed15703e89adbe582e0383","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac80211/spectmgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.9"},{"lessThan":"6.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","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":"6.12.113","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reject invalid 320 MHz CSA bandwidth\n\nThe HT/VHT channel definition validator can receive a 320 MHz\nbandwidth indication from a received CSA frame on a non-6 GHz link.\nIt warns for this unsupported width but continues with an uninitialized\nvht_operation.chan_width, which is then read by\nieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a\nreceived frame panic the kernel.\n\nReject the channel definition before entering the VHT operation\nconversion. This preserves the existing CSA fallback while avoiding\nboth the warning and the uninitialized read."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:24:11.728Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16"},{"url":"https://git.kernel.org/stable/c/1892e71aa2e5ee667d87c6e49e3661f5e290303b"},{"url":"https://git.kernel.org/stable/c/79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c"},{"url":"https://git.kernel.org/stable/c/56e236759f0a8dc910c2ae7cd3c161f298ee5794"}],"title":"wifi: mac80211: reject invalid 320 MHz CSA bandwidth","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98702","datePublished":"2026-10-18T15:46:32.122Z","dateReserved":"2026-09-25T10:25:14.365Z","dateUpdated":"2026-10-19T09:24:11.728Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:23","lastModifiedDate":"2026-10-19 10:19:34","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98702","Ordinal":"1","Title":"wifi: mac80211: reject invalid 320 MHz CSA bandwidth","CVE":"CVE-2026-98702","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98702","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reject invalid 320 MHz CSA bandwidth\n\nThe HT/VHT channel definition validator can receive a 320 MHz\nbandwidth indication from a received CSA frame on a non-6 GHz link.\nIt warns for this unsupported width but continues with an uninitialized\nvht_operation.chan_width, which is then read by\nieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a\nreceived frame panic the kernel.\n\nReject the channel definition before entering the VHT operation\nconversion. This preserves the existing CSA fallback while avoiding\nboth the warning and the uninitialized read.","Type":"Description","Title":"wifi: mac80211: reject invalid 320 MHz CSA bandwidth"}]}}}