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Graph/381251e3-bc16-45f5-92bb-71710ae1eec5

RootCauseunvalidated

chown-core.c:change_file_owner and chmod.c:process_file.

381251e3-bc16-45f5-92bb-71710ae1eec5

chown-core.c:change_file_owner and chmod.c:process_file.

Node Details

Public graph metadata

Updated5/1/2026

PageRank0.0000

Effectiveness0.000

Connections

3 linked nodes

CAUSED_BYProblem

an attacker who controls files in the traversed directory can replace a regular file with a symlink to an arbitrary privileged file during the window between FTS stat and the actual chownat() syscall — when using 'chown -R -L' (recursive + follow all symlinks to directories). Tension: This allows changing ownership of any file on the system.

PERTAIN_TODomain

System Security / File Operations

IDENTIFIESReport

CVE-2017-18018: TOCTOU race in coreutils chown/chgrp/chmod -R via symlink swap

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