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vuln-cve/data/2024/42xxx/CVE-2024-42225.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2024-42225",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-07-30T07:40:12.250Z",
"datePublished": "2024-07-30T07:47:06.397Z",
"dateUpdated": "2026-08-05T11:35:56.118Z"
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{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: replace skb_put with skb_put_zero\n\nAvoid potentially reusing uninitialized data"
}
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
"baseScore": 8.3,
"baseSeverity": "HIGH"
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"value": "AV:A - All affected paths are mt76 WiFi MCU command builders driven by wireless activity — scans, station association (AP mode), beacon/in-band-discovery templates — and the unzeroed bytes end up in frames the firmware transmits, so an attacker within radio range both triggers and observes the flaw.\nAC:L - The affected code runs on every scan, association and beacon update rather than on a rare error path, and the attacker can force repeated scans or reassociations to resample fresh skb allocations indefinitely.\nPR:N - No credentials are needed: an unauthenticated station reaches the sta_rec/beacon TLV builders by sending association frames to an mt7915 AP, and the scan-path leakage requires only passive reception of probe requests.\nUI:N - Scanning, association handling and beacon offload happen automatically as part of normal WiFi operation with no victim action required.\nS:U - The impact stays within the kernel/driver and its WiFi device, which the kernel already fully controls; no VM, IOMMU or sandbox boundary is crossed.\nC:H - Uninitialized recycled kernel heap memory is embedded in MCU messages and, via the never-initialized ext_ssids[6], random_mac and ies_len/ies[] scan fields and the beacon-content sub-TLVs, can be emitted over the air where any nearby listener can collect it repeatedly.\nI:L - Uninitialized bytes populate firmware configuration the code never sets — scan_func control bits, ext_ssids_num, GTK-rekey key_mgmt/proto/cipher fields, WoW pattern and mask tails, and sta_rec_sec key padding — a real but undirected modification since the attacker does not choose the values.\nA:H - Uninitialized count and length fields handed to the MCU are wildly out of range (ies_len up to 65535 against a 600-byte array, ext_ssids_num up to 255 against 6 entries), which can fault the firmware; mt76 answers MCU exceptions and timeouts with a device reset that takes the wireless interface down."
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c",
"drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
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"status": "affected",
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"status": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c",
"drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
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"versions": [
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"status": "affected"
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{
"version": "0",
"lessThan": "4.16",
"status": "unaffected",
"versionType": "semver"
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{
"version": "5.15.163",
"lessThanOrEqual": "5.15.*",
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"lessThanOrEqual": "6.1.*",
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"lessThanOrEqual": "6.6.*",
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{
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"lessThanOrEqual": "6.9.*",
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{
"version": "6.10",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
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"nodes": [
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"url": "https://git.kernel.org/stable/c/7f819a2f4fbc510e088b49c79addcf1734503578"
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"title": "wifi: mt76: replace skb_put with skb_put_zero",
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"content": {
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"role": "CISA Coordinator",
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"timestamp": "2024-09-10T16:14:38.019669Z"
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}
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