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Untriaged
Permalink CVE-2026-35372
5.0 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): LOW
  • Privileges required (PR): LOW
  • User interaction (UI): REQUIRED
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): HIGH
  • Availability impact (A): NONE
created 6 days, 11 hours ago Activity log
  • Created suggestion
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.

Affected products

coreutils
  • <0.8.0

Matching in nixpkgs

pkgs.coreutils

GNU Core Utilities

  • nixos-unstable 9.10
    • nixpkgs-unstable 9.10
    • nixos-unstable-small 9.10
  • nixos-25.11 9.8
    • nixos-25.11-small 9.8
    • nixpkgs-25.11-darwin 9.8