CVE-2024-40992

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix responder length checking for UD request packets According to the IBA specification: If a UD request packet is detected with an invalid length, the request shall be an invalid request and it shall be silently dropped by the responder. The responder then waits for a new request packet. commit 689c5421bfe0 ("RDMA/rxe: Fix incorrect responder length checking") defers responder length check for UD QPs in function `copy_data`. But it introduces a regression issue for UD QPs. When the packet size is too large to fit in the receive buffer. `copy_data` will return error code -EINVAL. Then `send_data_in` will return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into ERROR state.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341	Patch
https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996	Patch
https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636	Patch
https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341	Patch
https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996	Patch
https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.10:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.10:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.10:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.10:rc4::::::

History

No history.

Information

Published : 2024-07-12 13:15

Updated : 2025-10-07 20:07

NVD link : CVE-2024-40992

Mitre link : CVE-2024-40992

CVE.ORG link : CVE-2024-40992

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2024-40992", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-07-12T13:15:20.497", "references": [{"url": "https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix responder length checking for UD request packets\n\nAccording to the IBA specification:\nIf a UD request packet is detected with an invalid length, the request\nshall be an invalid request and it shall be silently dropped by\nthe responder. The responder then waits for a new request packet.\n\ncommit 689c5421bfe0 (\"RDMA/rxe: Fix incorrect responder length checking\")\ndefers responder length check for UD QPs in function `copy_data`.\nBut it introduces a regression issue for UD QPs.\n\nWhen the packet size is too large to fit in the receive buffer.\n`copy_data` will return error code -EINVAL. Then `send_data_in`\nwill return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into\nERROR state."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/rxe: corrige la comprobaci\u00f3n de la longitud del respondedor para los paquetes de solicitud UD. Seg\u00fan la especificaci\u00f3n IBA: si se detecta un paquete de solicitud UD con una longitud no v\u00e1lida, la solicitud ser\u00e1 una solicitud no v\u00e1lida y El respondedor lo dejar\u00e1 caer silenciosamente. Luego, el respondedor espera un nuevo paquete de solicitud. El commit 689c5421bfe0 (\"RDMA/rxe: corregir la verificaci\u00f3n incorrecta de la longitud del respondedor\") pospone la verificaci\u00f3n de la longitud del respondedor para los QP de UD en la funci\u00f3n `copy_data`. Pero introduce un problema de regresi\u00f3n para los QP de UD. Cuando el tama\u00f1o del paquete es demasiado grande para caber en el b\u00fafer de recepci\u00f3n. `copy_data` devolver\u00e1 el c\u00f3digo de error -EINVAL. Entonces `send_data_in` devolver\u00e1 RESPST_ERR_MALFORMED_WQE. UD QP pasar\u00e1 al estado ERROR."}], "lastModified": "2025-10-07T20:07:06.290", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E1046C95-860A-45B0-B718-2B29F65BFF10", "versionEndExcluding": "6.6.36", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C", "versionEndExcluding": "6.9.7", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2EBB4392-5FA6-4DA9-9772-8F9C750109FA"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "331C2F14-12C7-45D5-893D-8C52EE38EA10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3173713D-909A-4DD3-9DD4-1E171EB057EE"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79F18AFA-40F7-43F0-BA30-7BDB65F918B9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}