FKIE_CVE-2021-47301

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2024-12-26 20:44
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning the TX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runs while the controller is reset this can lead to the driver try to free a skb that was already freed. (The crash is harder to reproduce with the igb driver, but the same potential problem exists as the code is identical to igc)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b292608db23ccbbfbfa50cdb155d01725d7a52ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88e0720133d42d34851c8721cf5f289a50a8710fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e24c12f2ff6d32fd9f057382f08e748ec97194cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3ccb18ed5ac3283c7b31ecc685b499e580d5492Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d7367f781e5a9ca5df9082b15b272b55e76931f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f153664d8e70c11d0371341613651e1130e20240Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7b292608db23ccbbfbfa50cdb155d01725d7a52ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/88e0720133d42d34851c8721cf5f289a50a8710fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e24c12f2ff6d32fd9f057382f08e748ec97194cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d3ccb18ed5ac3283c7b31ecc685b499e580d5492Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d7367f781e5a9ca5df9082b15b272b55e76931f8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f153664d8e70c11d0371341613651e1130e20240Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.14
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigb: Fix use-after-free error during reset\n\nCleans the next descriptor to watch (next_to_watch) when cleaning the\nTX ring.\n\nFailure to do so can cause invalid memory accesses. If igb_poll() runs\nwhile the controller is reset this can lead to the driver try to free\na skb that was already freed.\n\n(The crash is harder to reproduce with the igb driver, but the same\npotential problem exists as the code is identical to igc)"
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: igb: corrige el error de use after free durante el reinicio. Limpia el siguiente descriptor a observar (next_to_watch) al limpiar el anillo TX. De lo contrario, se pueden producir accesos a la memoria no v\u00e1lidos. Si igb_poll() se ejecuta mientras se reinicia el controlador, esto puede hacer que el controlador intente liberar un skb que ya estaba liberado. (El fallo es m\u00e1s dif\u00edcil de reproducir con el controlador igb, pero existe el mismo problema potencial ya que el c\u00f3digo es id\u00e9ntico al de igc)"
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  "id": "CVE-2021-47301",
  "lastModified": "2024-12-26T20:44:31.930",
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          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.