180 lines
9.9 KiB
JSON
180 lines
9.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-93799",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-18T17:59:28.789Z",
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"datePublished": "2026-09-24T16:02:32.174Z",
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"dateUpdated": "2026-10-03T10:57:33.642Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-03T10:57:33.642Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: validate sta_id in BA window status notif\n\nBA_WINDOW_STATUS_NOTIFICATION_ID extracts a 5-bit sta_id from the\nfirmware notification and uses it to index fw_id_to_mac_id[] without\nbounds checking. Validate sta_id before array access to prevent\nout-of-bounds indexing."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:A - The bad 5-bit sta_id is in BA_WINDOW_STATUS_NOTIFICATION (cmd 0x13) DMA'd from the Intel WiFi NIC. iwl_pcie_rx_handle_rb → iwl_op_mode_rx → iwl_mvm_rx → iwl_mvm_rx_common dispatches that notif to iwl_mvm_window_status_notif, which reports received MPDUs in the BA window; that is WiFi radio range, not a routable IP protocol.\nAC:L - iwl_mvm_window_status_notif uses notif->ra_tid's 5-bit sta_id with no race or extra kernel gate beyond VALID and mpdu_rx_count != 0. A nearby peer that sends aggregated 802.11 traffic causes firmware to emit this BA window notif; once sta_id >= num_stations the fw_id_to_mac_id[] OOB is deterministic.\nPR:N - iwl_mvm_window_status_notif is an RX_HANDLER_SYNC handler with no capability, socket, or 802.11 authentication check; iwl_mvm_rx_common invokes it from NAPI as soon as cmd 0x13 arrives. A radio-range attacker needs no host account.\nUI:N - The BA_WINDOW_STATUS_NOTIFICATION is processed automatically in iwl_pcie_napi_poll / iwl_mvm_rx_common on an already-up Intel WiFi interface; the attacker does not need the victim to open a file, mount media, or click through a prompt.\nS:U - The OOB index and the later type-confused ieee80211_mark_rx_ba_filtered_frames() call stay inside iwlwifi/mac80211 kernel memory on the same host; they do not cross a VM, IOMMU, or sandbox boundary.\nC:H - sta_id is 5 bits (0-31) but fw_id_to_mac_id[] has IWL_STATION_COUNT_MAX (16) entries, so sta_id 16-31 reads adjacent fw_id_to_link_sta[] pointers as ieee80211_sta*. ieee80211_mark_rx_ba_filtered_frames() then container_of()s that into sta_info and follows sta->sdata and tid_rx, a type confusion that can disclose kernel memory.\nI:H - The same confused sta_info is used to write tid_agg_rx->head_seq_num and reorder_buf_filtered and to release reorder-buffer frames into ieee80211_rx_handlers(), so the fw_id_to_link_sta versus ieee80211_sta type confusion is a kernel write / RX-injection primitive.\nA:H - Treating an ieee80211_link_sta* as ieee80211_sta* makes container_of() in ieee80211_mark_rx_ba_filtered_frames() compute a bogus sta_info, and the immediate sta->sdata->local dereference in NAPI oopses or panics."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/intel/iwlwifi/mvm/rx.c"
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],
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"versions": [
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{
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"version": "3af512d6aac7eb6420086f124abb4426f5f4b369",
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"lessThan": "f9938eb95e2ddab4a58d3946a320abcbd60b56a4",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3af512d6aac7eb6420086f124abb4426f5f4b369",
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"lessThan": "bb08fbbbd5568d33069485ecb0a1657f115a4e9f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3af512d6aac7eb6420086f124abb4426f5f4b369",
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"lessThan": "e35ae757c6462bfd3437bf58121bb721fe1f790c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3af512d6aac7eb6420086f124abb4426f5f4b369",
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"lessThan": "6aa77efaea9efea92e3090c35ad348fd759a3cf3",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/intel/iwlwifi/mvm/rx.c"
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],
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"versions": [
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{
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"version": "4.6",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.6",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.158",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.111",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.53",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.6",
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"versionEndExcluding": "6.6.158"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.6",
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"versionEndExcluding": "6.12.111"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.6",
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"versionEndExcluding": "6.18.53"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.6",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/f9938eb95e2ddab4a58d3946a320abcbd60b56a4"
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},
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{
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"url": "https://git.kernel.org/stable/c/bb08fbbbd5568d33069485ecb0a1657f115a4e9f"
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},
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{
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"url": "https://git.kernel.org/stable/c/e35ae757c6462bfd3437bf58121bb721fe1f790c"
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},
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{
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"url": "https://git.kernel.org/stable/c/6aa77efaea9efea92e3090c35ad348fd759a3cf3"
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}
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],
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"title": "wifi: iwlwifi: mvm: validate sta_id in BA window status notif",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |