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CVE-2024-50169

Estado: ModificadaMedia (5.5)—

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

vsock: Update rx_bytes on read_skb()

Make sure virtio_transport_inc_rx_pkt() and virtio_transport_dec_rx_pkt() calls are balanced (i.e. virtio_vsock_sock::rx_bytes doesn't lie) after vsock_transport::read_skb().

While here, also inform the peer that we've freed up space and it has more credit.

Failing to update rx_bytes after packet is dequeued leads to a warning on SOCK_STREAM recv():

Detalles técnicos trazas, registros y código del informe original
[  233.396654] rx_queue is empty, but rx_bytes is non-zero
[  233.396702] WARNING: CPU: 11 PID: 40601 at net/vmw_vsock/virtio_transport_common.c:589

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)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: Update rx_bytes on read_skb()\n\nMake sure virtio_transport_inc_rx_pkt() and virtio_transport_dec_rx_pkt()\ncalls are balanced (i.e. virtio_vsock_sock::rx_bytes doesn't lie) after\nvsock_transport::read_skb().\n\nWhile here, also inform the peer that we've freed up space and it has more\ncredit.\n\nFailing to update rx_bytes after packet is dequeued leads to a warning on\nSOCK_STREAM recv():\n\n[  233.396654] rx_queue is empty, but rx_bytes is non-zero\n[  233.396702] WARNING: CPU: 11 PID: 40601 at net/vmw_vsock/virtio_transport_common.c:589"
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vsock: Actualizar rx_bytes en read_skb() Asegúrese de que las llamadas a virtio_transport_inc_rx_pkt() y virtio_transport_dec_rx_pkt() estén equilibradas (es decir, virtio_vsock_sock::rx_bytes no mienta) después de vsock_transport::read_skb(). Mientras esté aquí, también informe al par que hemos liberado espacio y que tiene más crédito. Si no se actualiza rx_bytes después de que se saca el paquete de la cola, se genera una advertencia en SOCK_STREAM recv(): [ 233.396654] rx_queue está vacío, pero rx_bytes no es cero [ 233.396702] ADVERTENCIA: CPU: 11 PID: 40601 en net/vmw_vsock/virtio_transport_common.c:589"
    }
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  "lastModified": "2026-06-17T08:03:46.460",
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