FKIE_CVE-2024-27043

Vulnerability from fkie_nvd - Published: 2024-05-01 13:15 - Updated: 2024-12-23 19:13
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: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: edia: dvbdev: fix a use-after-free\n\nIn dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed\nin several error-handling paths. However, *pdvbdev is not set to NULL\nafter dvbdev\u0027s deallocation, causing use-after-frees in many places,\nfor example, in the following call chain:\n\nbudget_register\n  |-\u003e dvb_dmxdev_init\n        |-\u003e dvb_register_device\n  |-\u003e dvb_dmxdev_release\n        |-\u003e dvb_unregister_device\n              |-\u003e dvb_remove_device\n                    |-\u003e dvb_device_put\n                          |-\u003e kref_put\n\nWhen calling dvb_unregister_device, dmxdev-\u003edvbdev (i.e. *pdvbdev in\ndvb_register_device) could point to memory that had been freed in\ndvb_register_device. Thereafter, this pointer is transferred to\nkref_put and triggering a use-after-free."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: medios: edia: dvbdev: corregir un use-after-free En dvb_register_device, *pdvbdev se establece igual a dvbdev, que se libera en varias rutas de manejo de errores. Sin embargo, *pdvbdev no se establece en NULL despu\u00e9s de la desasignaci\u00f3n de dvbdev, lo que provoca use-after-free en muchos lugares, por ejemplo, en la siguiente cadena de llamadas: Budget_register |-\u0026gt; dvb_dmxdev_init |-\u0026gt; dvb_register_device |-\u0026gt; dvb_dmxdev_release |-\u0026gt; dvb_unregister_device | -\u0026gt; dvb_remove_device |-\u0026gt; dvb_device_put |-\u0026gt; kref_put Al llamar a dvb_unregister_device, dmxdev-\u0026gt;dvbdev (es decir, *pdvbdev en dvb_register_device) podr\u00eda apuntar a la memoria que se hab\u00eda liberado en dvb_register_device. A partir de entonces, este puntero se transfiere a kref_put y se activa un use-after-free."
    }
  ],
  "id": "CVE-2024-27043",
  "lastModified": "2024-12-23T19:13:31.163",
  "metrics": {
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          "baseScore": 7.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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        "source": "nvd@nist.gov",
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  "published": "2024-05-01T13:15:49.740",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.