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CVE-2026-23136

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

libceph: reset sparse-read state in osd_fault()

When a fault occurs, the connection is abandoned, reestablished, and any pending operations are retried. The OSD client tracks the progress of a sparse-read reply using a separate state machine, largely independent of the messenger's state.

If a connection is lost mid-payload or the sparse-read state machine returns an error, the sparse-read state is not reset. The OSD client will then interpret the beginning of a new reply as the continuation of the old one. If this makes the sparse-read machinery enter a failure state, it may never recover, producing loops like:

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Therefore, reset the sparse-read state in osd_fault(), ensuring retries start from a clean state.

Detalles técnicos trazas, registros y código del informe original
  libceph:  [0] got 0 extents
  libceph: data len 142248331 != extent len 0
  libceph: osd0 (1)...:6801 socket error on read
  libceph: data len 142248331 != extent len 0
  libceph: osd0 (1)...:6801 socket error on read

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-23136",
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: reset sparse-read state in osd_fault()\n\nWhen a fault occurs, the connection is abandoned, reestablished, and any\npending operations are retried. The OSD client tracks the progress of a\nsparse-read reply using a separate state machine, largely independent of\nthe messenger's state.\n\nIf a connection is lost mid-payload or the sparse-read state machine\nreturns an error, the sparse-read state is not reset. The OSD client\nwill then interpret the beginning of a new reply as the continuation of\nthe old one. If this makes the sparse-read machinery enter a failure\nstate, it may never recover, producing loops like:\n\n  libceph:  [0] got 0 extents\n  libceph: data len 142248331 != extent len 0\n  libceph: osd0 (1)...:6801 socket error on read\n  libceph: data len 142248331 != extent len 0\n  libceph: osd0 (1)...:6801 socket error on read\n\nTherefore, reset the sparse-read state in osd_fault(), ensuring retries\nstart from a clean state."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nlibceph: restablecer el estado de lectura dispersa en osd_fault()\n\nCuando ocurre un fallo, la conexión es abandonada, restablecida, y cualquier operación pendiente es reintentada. El cliente OSD rastrea el progreso de una respuesta de lectura dispersa usando una máquina de estados separada, en gran medida independiente del estado del mensajero.\n\nSi se pierde una conexión a mitad de la carga útil o la máquina de estados de lectura dispersa devuelve un error, el estado de lectura dispersa no se restablece. El cliente OSD interpretará entonces el comienzo de una nueva respuesta como la continuación de la antigua. Si esto hace que la maquinaria de lectura dispersa entre en un estado de fallo, puede que nunca se recupere, produciendo bucles como:\n\n  libceph: [0] got 0 extents\n  libceph: data len 142248331 != extent len 0\n  libceph: osd0 (1)...:6801 socket error on read\n  libceph: data len 142248331 != extent len 0\n  libceph: osd0 (1)...:6801 socket error on read\n\nPor lo tanto, restablecer el estado de lectura dispersa en osd_fault(), asegurando que los reintentos comiencen desde un estado limpio."
    }
  ],
  "lastModified": "2026-06-17T10:20:57.940",
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