{"id":101322,"date":"2021-09-19T10:22:50","date_gmt":"2021-09-19T08:22:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-podsisteme-io_uring-yadra-linux-pozvolyayushhaya-podnyat-svoi-privilegii"},"modified":"2021-09-19T10:22:50","modified_gmt":"2021-09-19T08:22:50","slug":"uyazvimost-v-podsisteme-io_uring-yadra-linux-pozvolyayushhaya-podnyat-svoi-privilegii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-podsisteme-io_uring-yadra-linux-pozvolyayushhaya-podnyat-svoi-privilegii","title":{"rendered":"Vulnerabilidad en la subsistema io_uring del n\u00facleo Linux que permite elevar privilegios","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Se ha identificado una vulnerabilidad en el n\u00facleo de Linux (CVE-2021-41073) que permite a un usuario local elevar sus privilegios en el sistema. El problema se debe a un error en la implementaci\u00f3n de la interfaz de entrada\/salida as\u00edncrona io_uring, lo que lleva a acceder a un bloque de memoria que ya ha sido liberado. Se ha observado que el investigador logr\u00f3 liberar memoria en una direcci\u00f3n espec\u00edfica manipulando la funci\u00f3n loop_rw_iter() desde un usuario no privilegiado, lo que hace posible la creaci\u00f3n de un exploit funcional. Actualmente, el problema solo se ha resuelto en forma de un parche que ha sido retroportado a las ramas estables del n\u00facleo, pero a\u00fan no se ha lanzado una actualizaci\u00f3n.
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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