GHSA-PMF6-RCX4-V53V mkfifo: permissions of an existing file are changed after FIFO creation fails

When mkfifo fails e.g. target already exists, the code shows an error but is missing a continue;, so it falls through to fs::setpermissions and changes the permissions of the pre-existing file to the default FIFO mode 0o666 & umask - 0644. $ touch secret; chmod 000 secret $ coreutils mkfifo secre...

mkfifo: permissions of an existing file are changed after FIFO creation fails

When mkfifo fails e.g. target already exists, the code shows an error but is missing a continue;, so it falls through to fs::setpermissions and changes the permissions of the pre-existing file to the default FIFO mode 0o666 & umask - 0644. $ touch secret; chmod 000 secret $ coreutils mkfifo secre...

mv: symlinks expanded during cross-device move (resource exhaustion / data duplication)

When moving directories across filesystems, uutils mv dereferences symlinks inside the tree, copying their targets as real files/dirs instead of preserving the symlinks. GNU preserves symlinks by default. E.g. a etclink - /etc inside the source becomes a full copy of /etc at the destination...

kill: 'kill -1' parsed as PID -1, sending SIGTERM to all processes (system crash / DoS)

kill -1 is incorrectly parsed as a positional pid = -1; combined with the default SIGTERM this calls kill-1, SIGTERM, signaling nearly every process the caller can see. GNU kill recognizes -1/-9 as signals and reports "not enough arguments". $ kill -1 uutils: kill-1, SIGTERM - mass termination /...

chmod: --preserve-root bypassed by any path that resolves to root (e.g. /../)

Chmoder::chmod only compares the literal argument against Path::new"/", so the --preserve-root guard is bypassed by any path that resolves to root — a symlink to / or simply /../. if self.recursive && self.preserveroot && file == Path::new"/" return ErrChmodError::PreserveRoot"/".tostring.into; P...