cve-2021-47587
Vulnerability from cvelistv5
Published
2024-06-19 14:53
Modified
2024-11-04 12:08
Severity ?
Summary
net: systemport: Add global locking for descriptor lifecycle
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/595a684fa6f23b21958379a18cfa83862c73c2e1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e1011cd183faae8daff275c72444edcdfe0d473Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b8e6e782456f1ce02a7ae914bbd5b1053f0b034Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ed2f5d08d6e59f8c78b2869bfb95d0be32c094cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c675256a7f131f5ba3f331efb715e8f31ea0e392Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de57f62f76450b934de8203711bdc4f7953c3421Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb4687c7442942e115420a30185f8d83faf37696Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3fde37d3f0d429f0fcce214cb52588a9e21260ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/595a684fa6f23b21958379a18cfa83862c73c2e1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6e1011cd183faae8daff275c72444edcdfe0d473Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8b8e6e782456f1ce02a7ae914bbd5b1053f0b034Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8ed2f5d08d6e59f8c78b2869bfb95d0be32c094cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c675256a7f131f5ba3f331efb715e8f31ea0e392Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/de57f62f76450b934de8203711bdc4f7953c3421Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/eb4687c7442942e115420a30185f8d83faf37696Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f3fde37d3f0d429f0fcce214cb52588a9e21260ePatch
Impacted products
Vendor Product Version
Linux Linux Version: 3.16
Show details on NVD website

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La lista de descriptores es un recurso compartido entre todas las colas de transmisi\u00f3n y el mecanismo de bloqueo que se usa hoy solo protege la concurrencia en una cola de transmisi\u00f3n determinada. entre la transmisi\u00f3n y la recuperaci\u00f3n. Esto crea una oportunidad para que el hardware de SYSTEMPORT funcione con descriptores corruptos si tenemos varios productores a la vez, como es el caso cuando utilizamos varias colas de transmisi\u00f3n. Esto fue particularmente notable cuando se usaban m\u00faltiples flujos/colas de transmisi\u00f3n y se mostr\u00f3 de manera interesante en que los paquetes UDP obtendr\u00edan una suma de verificaci\u00f3n de encabezado UDP correcta al calcularse sobre una longitud de paquete incorrecta. De manera similar, los paquetes TCP obtendr\u00edan una suma de verificaci\u00f3n igualmente correcta calculada por el hardware en una longitud de paquete incorrecta. El hardware de SYSTEMPORT mantiene una lista de descriptores internos que reorganiza cuando el controlador produce un nuevo descriptor cada vez que escribe en los registros WRITE_PORT_{HI,LO}. Sin embargo, hay cierto retraso en el hardware para reorganizar sus descriptores y es Es posible que las colas de TX simult\u00e1neas eventualmente rompan este esquema de asignaci\u00f3n interna hasta el punto en que la parte de longitud/estado del descriptor se use para un b\u00fafer de datos incorrecto. 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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.