CVE-2024-43881

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Otherwise,\nan invalid payload may be reinjected into the HW and\nsubsequently delivered to the host.\n\nGiven that arbitrary memory can be allocated to the skb buffer,\nknowledge about the data contained in the reinjected buffer is lacking.\nConsequently, there\u2019s a risk of private information being leaked.\n\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The trigger is a sequence of fragmented 802.11 data frames received over the air by the ath12k Wi-Fi driver, processed in the REO exception/defrag RX path. This requires the attacker to be within radio range on the same WLAN segment, which is CVSS Adjacent.\nAC:L - The attacker fully controls the trigger \u2014 simply send a fragmented MPDU sequence \u2014 with no race to win and no memory layout dependency; sizing the fragments above DP_RX_BUFFER_SIZE + tailroom deterministically forces the pskb_expand_head() path so the reinjected buffer is freshly allocated uninitialized heap. The affected platform class (DMA-noncoherent embedded ARM APs and SWIOTLB-bounced systems) is the primary deployment target for QCN9274/ath12k.\nPR:N - No privileges on the host are needed; the attacker only needs to be a peer sending fragments, and ath12k_dp_rx_h_defrag_validate_incr_pn() returns true unconditionally for non-CCMP/GCMP encryption, so open/guest/hotspot SSIDs and rogue-AP-against-STA scenarios have no authentication gate on this path.\nUI:N - The vulnerable code runs in the NAPI receive path and executes automatically on arrival of fragmented frames. No local user action of any kind is required.\nS:U - The mis-directioned DMA mapping and its consequences are confined to the kernel's own memory and the driver's RX pipeline, all within the same security authority. There is no VM, IOMMU, or sandbox boundary crossed.\nC:H - Up to a full RX buffer of arbitrary uninitialized kernel slab memory (recently freed heap that may contain keys, kernel pointers, or other packets' data) is handed to the Wi-Fi hardware and re-delivered as network payload, repeatably at frame rate; in the standard AP/bridge/repeater deployment it is forwarded onto the LAN or back over the air where the attacker can capture it. The upstream fix explicitly cites leakage of private information.\nI:H - The legitimate reassembled frame is silently replaced with unrelated memory that mac80211 accepts flagged RX_FLAG_DECRYPTED | RX_FLAG_PN_VALIDATED, i.e. arbitrary content is injected into the host's network stack and bridge as authenticated data from a trusted peer, bypassing link-layer integrity protection; an attacker able to groom the kernel heap can influence that content.\nA:H - The returned buffer is parsed as a hardware RX descriptor while containing uninitialized heap, and the is_frag branch in ath12k_dp_rx_process_msdu() skips the msdu_len bounds check, driving skb_pull/skb_push/memmove and rate decoding from garbage \u2014 e.g. nss==0 underflows rate_idx to >2000 and trips mac80211's WARN_ON, which panics on panic_on_warn systems, alongside continuous RX-path corruption and frame loss."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ath/ath12k/dp_rx.c"], "versions": [{"version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "lessThan": "e99d9b16ff153de9540073239d24adc3b0a3a997", "status": "affected", "versionType": "git"}, {"version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "lessThan": "6925320fcd40d8042d32bf4ede8248e7a5315c3b", "status": "affected", "versionType": "git"}, {"version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "lessThan": "33322e3ef07409278a18c6919c448e369d66a18e", "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/ath/ath12k/dp_rx.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.44", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.3", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11", "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": "6.3", "versionEndExcluding": "6.6.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.10.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.11"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997"}, {"url": "https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b"}, {"url": "https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e"}], "title": "wifi: ath12k: change DMA direction while mapping reinjected packets", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-43881", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:05:47.970201Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:15.718Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/ath/ath12k/dp_rx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e99d9b16ff153de9540073239d24adc3b0a3a997", "status": "affected", "version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "versionType": "git"}, {"lessThan": "6925320fcd40d8042d32bf4ede8248e7a5315c3b", "status": "affected", "version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "versionType": "git"}, {"lessThan": "33322e3ef07409278a18c6919c448e369d66a18e", "status": "affected", "version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/ath/ath12k/dp_rx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.3"}, {"lessThan": "6.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.44", "versionType": "semver"}, {"lessThanOrEqual": "6.10.*", "status": "unaffected", "version": "6.10.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.11", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E752D2D6-EE15-4491-857A-AA8D6AE62EDF", "versionEndExcluding": "6.6.44", "versionStartIncluding": "6.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "92D388F2-1EAF-4CFA-AC06-5B26D762EA7D", "versionEndExcluding": "6.10.3", "versionStartIncluding": "6.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: change DMA direction while mapping reinjected packets\n\nFor fragmented packets, ath12k reassembles each fragment as a normal\npacket and then reinjects it into HW ring. In this case, the DMA\ndirection should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise,\nan invalid payload may be reinjected into the HW and\nsubsequently delivered to the host.\n\nGiven that arbitrary memory can be allocated to the skb buffer,\nknowledge about the data contained in the reinjected buffer is lacking.\nConsequently, there\u2019s a risk of private information being leaked.\n\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: wifi: ath12k: cambia la direcci\u00f3n de DMA al mapear paquetes reinyectados. Para paquetes fragmentados, ath12k vuelve a ensamblar cada fragmento como un paquete normal y luego lo reinyecta en el anillo HW. En este caso, la direcci\u00f3n DMA debe ser DMA_TO_DEVICE, no DMA_FROM_DEVICE. De lo contrario, se puede reinyectar una carga \u00fatil no v\u00e1lida en el HW y posteriormente entregarla al host. Dado que se puede asignar memoria arbitraria al b\u00fafer skb, falta conocimiento sobre los datos contenidos en el b\u00fafer reinyectado. En consecuencia, existe el riesgo de que se filtre informaci\u00f3n privada. Probado en: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1"}], "id": "CVE-2024-43881", "lastModified": "2026-08-04T11:19:57.530", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-43881", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:05:47.970201Z", "version": "2.0.3"}}]}, "published": "2024-08-21T01:15:12.280", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-668"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: wifi: ath12k: change DMA direction while mapping reinjected packets", "id": "2306375", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2306375"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L", "status": "draft"}, "cwe": "CWE-402", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: ath12k: change DMA direction while mapping reinjected packets\nFor fragmented packets, ath12k reassembles each fragment as a normal\npacket and then reinjects it into HW ring. In this case, the DMA\ndirection should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise,\nan invalid payload may be reinjected into the HW and\nsubsequently delivered to the host.\nGiven that arbitrary memory can be allocated to the skb buffer,\nknowledge about the data contained in the reinjected buffer is lacking.\nConsequently, there\u2019s a risk of private information being leaked.\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1"], "name": "CVE-2024-43881", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-08-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-43881\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-43881\nhttps://lore.kernel.org/linux-cve-announce/2024082138-CVE-2024-43881-ead4@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T22:44:24.788207+00:00", "updated": "2025-07-12T22:44:24.788262+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}