CVE-2024-43881

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: change DMA direction while mapping reinjected packets For fragmented packets, ath12k reassembles each fragment as a normal packet and then reinjects it into HW ring. In this case, the DMA direction should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise, an invalid payload may be reinjected into the HW and subsequently delivered to the host. Given that arbitrary memory can be allocated to the skb buffer, knowledge about the data contained in the reinjected buffer is lacking. Consequently, there’s a risk of private information being leaked. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e	Patch
https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b	Patch
https://git.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

26 Sep 2025, 18:39

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel::::::::
References	~~() https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e -~~	() https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e - Patch
References	~~() https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b -~~	() https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b - Patch
References	~~() https://git.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997 -~~	() https://git.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997 - Patch
First Time		Linux Linux linux Kernel
CWE		CWE-668
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.1

Information

Published : 2024-08-21 01:15

Updated : 2025-09-26 18:39

NVD link : CVE-2024-43881

Mitre link : CVE-2024-43881

CVE.ORG link : CVE-2024-43881

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-668

Exposure of Resource to Wrong Sphere

{"id": "CVE-2024-43881", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "published": "2024-08-21T01:15:12.280", "references": [{"url": "https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e99d9b16ff153de9540073239d24adc3b0a3a997", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-668"}]}], "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"}], "lastModified": "2025-09-26T18:39:51.283", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E752D2D6-EE15-4491-857A-AA8D6AE62EDF", "versionEndExcluding": "6.6.44", "versionStartIncluding": "6.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92D388F2-1EAF-4CFA-AC06-5B26D762EA7D", "versionEndExcluding": "6.10.3", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}