uutils coreutils ln Security Bypass via Improper Handling of the --no-dereference Flag
A logic error in the ln utility of uutils coreutils allows the utility to dereference a symbolic link target even when the --no-dereference (or -n) flag is explicitly provided. The implementation previously only honored the "no-dereference" intent if the --force (overwrite) mode was also enabled. This flaw causes ln to follow a symbolic link that points to a directory and create new links inside that target directory instead of treating the symbolic link itself as the destination. In environments where a privileged user or system script uses ln -n to update a symlink, a local attacker could manipulate existing symbolic links to redirect file creation into sensitive directories, potentially leading to unauthorized file creation or system misconfiguration.
AV:LAttack VectorAC:LAttack ComplexityPR:LPrivileges RequiredUI:RUser InteractionS:UScopeC:NConfidentialityI:HIntegrityA:NAvailabilityGet the full picture for CVE-2026-35372 and every CVE in our database. Create a free account — no credit card required.
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