- CVE-2026-70456: reserve the slot read_args() needs for its trailing NULL, so a peer argument count landing exactly on maxargs cannot write one pointer past the argv allocation - CVE-2026-70458: refuse FLAG_HLINKED when hard links are not in use and on a directory entry, so a peer cannot displace the checksum slot through hard-link extras that were never reserved; also set sender_keeps_checksum in the daemon-as-sender path, and skip the content-based basis match for a hard-linked non-regular file, so %C and --compare-dest cannot read a checksum slot that was never allocated - CVE-2026-70462: reject a non-positive MSG_IO_TIMEOUT from the peer and cap it at 24 hours, and make set_io_timeout()'s arithmetic overflow-safe, so a crafted server can neither disable the client's --timeout nor spin it at 100% CPU on a negative select() timeout - CVE-2026-70453: bound the hash_search() chain walk at MAX_CHAIN_LEN, so a basis file whose weak checksums all collide cannot drive an O(file_size * chain_length) scan - CVE-2026-53785: create each implied parent directory through do_mkdir_at() against a held O_NOFOLLOW directory fd, and widen that wrapper's gate from a non-chrooted daemon to any non-chrooted receiver as upstream does, so a parent component raced into a symlink can no longer place --relative directories outside the destination over ssh either - CVE-2026-53794: reject --max-alloc=0, which disabled the per-allocation size cap entirely instead of enforcing a zero one - CVE-2026-53790: shell-escape %VAR% expansions for their quoting context in the daemon's exec hooks and refuse a peer value holding shell syntax, quote the program names the rsync-ssl helper execs and restrict the hostname it interpolates into them, refuse a shell-active RSYNC_CONNECT_PROG host, and widen the remote-shell safe_arg() escape set