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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However, *pdvbdev is not set to NULL\\nafter dvbdev's deallocation, causing use-after-frees in many places,\\nfor example, in the following call chain:\\n\\nbudget_register\\n  |-> dvb_dmxdev_init\\n        |-> dvb_register_device\\n  |-> dvb_dmxdev_release\\n        |-> dvb_unregister_device\\n              |-> dvb_remove_device\\n                    |-> dvb_device_put\\n                          |-> kref_put\\n\\nWhen calling dvb_unregister_device, dmxdev->dvbdev (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 después de la desasignación de dvbdev, lo que provoca use-after-free en muchos lugares, por ejemplo, en la siguiente cadena de llamadas: Budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device | -> dvb_remove_device |-> dvb_device_put |-> kref_put Al llamar a dvb_unregister_device, dmxdev->dvbdev (es decir, *pdvbdev en dvb_register_device) podría apuntar a la memoria que se había liberado en dvb_register_device. A partir de entonces, este puntero se transfiere a kref_put y se activa un 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         dataType: "CVE_RECORD",
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      },
   },
}


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