uutils/coreutils · Security
uutils coreutils has a UNIX Symbolic Link (Symlink) Following issue
- GHSA ID
- GHSA-wq63-vh5h-pr5p
- CVE ID
- CVE-2026-35372
- Severity
- medium
- Published
- Updated
- CVSS
- 5 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
- CVSS v3
- 5 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Description
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.
CWEs
- CWE-61 · UNIX Symbolic Link (Symlink) Following