cve-2024-27043
Vulnerability from cvelistv5
Published
2024-05-01 12:54
Modified
2024-12-19 08:53
Severity ?
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 Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
Version: b61901024776b25ce7b8edc31bb1757c7382a88e
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   Linux Linux Version: 2.6.21
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-27043\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T13:15:49.740\",\"lastModified\":\"2024-12-23T19:13:31.163\",\"vulnStatus\":\"Analyzed\",\"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 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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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:53:13.947Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-27043\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:53:13.947Z\", \"dateReserved\": \"2024-02-19T14:20:24.212Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T12:54:11.197Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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