{"id":183346,"date":"2026-09-14T10:53:47","date_gmt":"2026-09-14T08:53:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/ubuntu-26-10-polnostyu-perevedyon-na-rust-coreutils"},"modified":"2026-09-14T10:53:51","modified_gmt":"2026-09-14T08:53:51","slug":"ubuntu-26-10-fully-switches-to-rust-coreutils","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/ubuntu-26-10-fully-switches-to-rust-coreutils","title":{"rendered":"Ubuntu 26.10 passa completamente a Rust Coreutils","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Nel repository dei pacchetti di Ubuntu 26.10, il cui rilascio \u00e8 previsto per il 15 ottobre, \u00e8 stata completata la migrazione all'insieme di strumenti uutils coreutils (Rust Coreutils), sviluppato in linguaggio Rust. Le utility di Rust Coreutils hanno sostituito integralmente tutti i componenti del pacchetto GNU Coreutils, comprese cp, mv e rm, che in Ubuntu 26.04 venivano ancora fornite nella versione di GNU Coreutils. <\/p>\n

Il pacchetto rust-coreutils era inizialmente incluso per impostazione predefinita nella versione di Ubuntu 25.10, ma nella branch LTS di Ubuntu 26.04 \u00e8 stato effettuato un rollback per fornire gli strumenti cp, mv e rm dal set GNU Coreutils. Le versioni cp, mv e rm sono state ripristinate a causa di problemi di sicurezza emersi durante l'audit del codice sorgente di Rust Coreutils. La maggior parte delle vulnerabilit\u00e0 in Rust Coreutils \u00e8 causata dalla presenza di condizioni di gara, che consentono di modificare i dati nel momento successivo alla verifica della validit\u00e0 delle informazioni, ma prima dell'esecuzione dell'operazione su di esse (TOCTOU \u2014 Time-Of-Check-To-Time-Of-Use). Tra l'altro, tali vulnerabilit\u00e0 permettono di sostituire un file con un collegamento simbolico nel momento tra la fine del controllo e l'inizio dell'esecuzione dell'operazione. <\/p>\n

Nel contesto dell'uso delle utility cp, mv e rm in script di sistema eseguiti con privilegi di root, la sostituzione con un link simbolico consente di copiare, sovrascrivere o eliminare file arbitrari. Per esempio, durante l'eliminazione ricorsiva delle directory, l'utility rm controllava inizialmente tutte le directory e poi le rimuoveva in sequenza in ordine inverso, richiamando la funzione rmdir(). Se si sostituisce la directory padre con un link simbolico subito dopo la verifica di tale directory, ma prima del controllo delle directory figlie al suo interno, \u00e8 possibile ottenere l'eliminazione di qualsiasi directory del sistema durante l'esecuzione quotidiana tramite cron dello script \/etc\/cron.daily\/apport, che, operando con privilegi di root, elimina ricorsivamente il contenuto della directory \/var\/crash, scrivibile da tutti gli utenti del sistema.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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