FKIE_CVE-2024-57798

Vulnerability from fkie_nvd - Published: 2025-01-11 13:15 - Updated: 2025-11-03 21:18
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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: drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req(). Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used. v2: Fix kfreeing the request if getting an mst_primary reference fails.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9735d40f5fde9970aa46e828ecc85c32571d58a2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce55818b2d3a999f886af91679589e4644ff1dc8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e54b00086f7473dbda1a7d6fc47720ced157c6a8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f61b2e5e7821f868d6afc22382a66a30ee780ba0Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.13
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()\n\nWhile receiving an MST up request message from one thread in\ndrm_dp_mst_handle_up_req(), the MST topology could be removed from\nanother thread via drm_dp_mst_topology_mgr_set_mst(false), freeing\nmst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL.\nThis could lead to a NULL deref/use-after-free of mst_primary in\ndrm_dp_mst_handle_up_req().\n\nAvoid the above by holding a reference for mst_primary in\ndrm_dp_mst_handle_up_req() while it\u0027s used.\n\nv2: Fix kfreeing the request if getting an mst_primary reference fails."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/dp_mst: garantizar que el puntero mst_primary sea v\u00e1lido en drm_dp_mst_handle_up_req() Al recibir un mensaje de solicitud de activaci\u00f3n de MST de un hilo en drm_dp_mst_handle_up_req(), la topolog\u00eda de MST podr\u00eda eliminarse de otro hilo mediante drm_dp_mst_topology_mgr_set_mst(false), liberando mst_primary y estableciendo drm_dp_mst_topology_mgr::mst_primary en NULL. Esto podr\u00eda conducir a una desreferencia/use after free de NULL de mst_primary en drm_dp_mst_handle_up_req(). Evite lo anterior manteniendo una referencia para mst_primary en drm_dp_mst_handle_up_req() mientras se usa. v2: Se soluciona el problema de liberar la solicitud si falla la obtenci\u00f3n de una referencia mst_primary."
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  "id": "CVE-2024-57798",
  "lastModified": "2025-11-03T21:18:34.083",
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