CVE-2024-47714

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This requires radio proximity to the AP's 6 GHz band rather than routable network access, which is Adjacent per the WiFi frame-injection guidance.\nAC:L - On the affected hardware the miscount is deterministic \u2014 band 2's chainmask sits entirely above bit 7, so hweight8() always returns 0 and tx_ant is always -1 \u2014 and the attacker simply associates while advertising SU-beamformee support to reach matrix[-1][ncol] every time. There is no race, no memory-layout requirement, and the attempt can be repeated indefinitely by re-associating.\nPR:N - In AP mode hostapd creates the station object at association, before the 4-way handshake or any credential validation, so mt7996_mac_sta_add() \u2192 mt7996_mcu_sta_bfer_tlv() runs for an attacker holding no key and no account on the target. Open and mesh/IBSS deployments have no authentication gate at all.\nUI:N - The attacker performs the association itself and the AP's kernel processes it automatically; no action by any user or administrator on the victim system is needed.\nS:U - The out-of-bounds read and the resulting bogus firmware-command fields stay within the kernel driver's own security authority, crossing no VM, IOMMU, or sandbox boundary.\nC:L - matrix[-1][ncol] reads adjacent kernel stack memory outside the const array, exposing stack contents that are then written into the sta_rec_bf TLV and transmitted to the WiFi firmware. The read is strictly bounded to the four bytes immediately preceding a 16-byte object at a fixed negative offset with no attacker-directed address and no channel returning the data over the air, so it is a small bounded leak rather than arbitrary read.\nI:L - The uninitialized out-of-bounds byte and the underflowed antenna count (ibf_nrow = 0xFF, mem_20m/mem_total derived from stray stack data) are programmed into the chip's beamforming profile via the MCU STA_REC_UPDATE command, a remotely-influenced corruption of device configuration state. No kernel memory is written out of bounds and no control-flow influence is available, so the modification is limited rather than arbitrary.\nA:H - The condition is a KASAN-detected stack-out-of-bounds in mt7996_mcu_add_sta(), which oopses and panics outright on kernels built with KASAN plus panic_on_warn or kasan.fault=panic \u2014 common in vendor and hardened builds. Independently, feeding out-of-range beamforming memory parameters and a 0xFF antenna count to the WiFi MCU can wedge the firmware and take the radio down, and the attacker can retrigger it on every association."}]}], "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.c"], "versions": [{"version": "98686cd21624c75a043e96812beadddf4f6f48e5", "lessThan": "50d87e3b70980abc090676b6b4703fcbd96221f9", "status": "affected", "versionType": "git"}, {"version": "98686cd21624c75a043e96812beadddf4f6f48e5", "lessThan": "8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3", "status": "affected", "versionType": "git"}, {"version": "98686cd21624c75a043e96812beadddf4f6f48e5", "lessThan": "33954930870c18ec549e4bca0eeff43e252cb740", "status": "affected", "versionType": "git"}, {"version": "98686cd21624c75a043e96812beadddf4f6f48e5", "lessThan": "f98c3de92bb05dac4a4969df8a4595ed380b4604", "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.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.54", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.13", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.2", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "6.6.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.10.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.11.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/50d87e3b70980abc090676b6b4703fcbd96221f9"}, {"url": "https://git.kernel.org/stable/c/8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3"}, {"url": "https://git.kernel.org/stable/c/33954930870c18ec549e4bca0eeff43e252cb740"}, {"url": "https://git.kernel.org/stable/c/f98c3de92bb05dac4a4969df8a4595ed380b4604"}], "title": "wifi: mt76: mt7996: use hweight16 to get correct tx antenna", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-47714", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-21T13:02:52.416293Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-21T13:04:18.545Z"}}]}}

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Sin este parche, la tx_ant de la banda 2 ser\u00eda -1 y provocar\u00eda el siguiente problema: ERROR: KASAN: pila fuera de los l\u00edmites en mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]"}], "id": "CVE-2024-47714", "lastModified": "2026-08-04T11:20:43.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.7, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-47714", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-21T13:02:52.416293Z", "version": "2.0.3"}}]}, "published": "2024-10-21T12:15:07.797", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/33954930870c18ec549e4bca0eeff43e252cb740"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/50d87e3b70980abc090676b6b4703fcbd96221f9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8f51fc8a9e2fd96363d8ec3f4ee4b78dd64754e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f98c3de92bb05dac4a4969df8a4595ed380b4604"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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{}