CVE-2026-23193

{"id": "CVE-2026-23193", "cveTags": [], "metrics": {}, "published": "2026-02-14T17:15:57.123", "references": [{"url": "https://git.kernel.org/stable/c/11ebafffce31efc6abeb28c509017976fc49f1ca", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()\n\nIn iscsit_dec_session_usage_count(), the function calls complete() while\nholding the sess->session_usage_lock. Similar to the connection usage count\nlogic, the waiter signaled by complete() (e.g., in the session release\npath) may wake up and free the iscsit_session structure immediately.\n\nThis creates a race condition where the current thread may attempt to\nexecute spin_unlock_bh() on a session structure that has already been\ndeallocated, resulting in a KASAN slab-use-after-free.\n\nTo resolve this, release the session_usage_lock before calling complete()\nto ensure all dereferences of the sess pointer are finished before the\nwaiter is allowed to proceed with deallocation."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: target: iscsi: Correcci\u00f3n de uso despu\u00e9s de liberaci\u00f3n en iscsit_dec_session_usage_count()\n\nEn iscsit_dec_session_usage_count(), la funci\u00f3n llama a complete() mientras mantiene el sess->session_usage_lock. Similar a la l\u00f3gica de conteo de uso de la conexi\u00f3n, el hilo en espera se\u00f1alado por complete() (por ejemplo, en la ruta de liberaci\u00f3n de la sesi\u00f3n) puede despertar y liberar la estructura iscsit_session inmediatamente.\n\nEsto crea una condici\u00f3n de carrera donde el hilo actual puede intentar ejecutar spin_unlock_bh() en una estructura de sesi\u00f3n que ya ha sido desasignada, lo que resulta en un KASAN slab-uso despu\u00e9s de liberaci\u00f3n.\n\nPara resolver esto, liberar el session_usage_lock antes de llamar a complete() para asegurar que todas las desreferencias del puntero sess hayan terminado antes de que se permita al hilo en espera proceder con la desasignaci\u00f3n."}], "lastModified": "2026-02-18T17:52:22.253", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}