FKIE_CVE-2024-40992

Vulnerability from fkie_nvd - Published: 2024-07-12 13:15 - Updated: 2025-10-07 20:07
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.10
linux linux_kernel 6.10
linux linux_kernel 6.10
linux linux_kernel 6.10
To clipboard 

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  "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."
    }
  ],
  "id": "CVE-2024-40992",
  "lastModified": "2025-10-07T20:07:06.290",
  "metrics": {
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          "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"
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  "published": "2024-07-12T13:15:20.497",
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  "vulnStatus": "Analyzed",
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}


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