{"id":"GHSA-h444-6j9x-p8vh","summary":"mv: symlinks expanded during cross-device move (resource exhaustion / data duplication)","details":"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 `etc_link -\u003e /etc` inside the source becomes a full copy of `/etc` at the destination.\n\n**Impact:** (1) resource exhaustion — a small tree can expand into a huge copy (time/disk DoS); (2) unintended duplication of sensitive paths referenced by symlink; (3) symlink-loop amplification causing deep recursion. Recommendation: in cross-device fallback, detect symlinks via `symlink_metadata()` and recreate with `read_link()`/`symlink()`; add loop detection.\n\n**Remediation:** Acknowledged by Canonical; fixed in commit 9654e4ab.\n\n---\n_Reported by Zellic in the *uutils coreutils Program Security Assessment* (prepared for Canonical, Jan 20 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`. Finding 3.63. Credit: Zellic._","aliases":["CVE-2026-35365"],"modified":"2026-07-06T20:41:30.159187Z","published":"2026-07-06T20:24:53Z","database_specific":{"cwe_ids":["CWE-400","CWE-59"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-07-06T20:24:53Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/uutils/coreutils/security/advisories/GHSA-h444-6j9x-p8vh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35365"},{"type":"WEB","url":"https://github.com/uutils/coreutils/pull/10546"},{"type":"WEB","url":"https://github.com/uutils/coreutils/commit/9654e4abaf24449ef2279e9a16963edb5c8b8fef"},{"type":"PACKAGE","url":"https://github.com/uutils/coreutils"},{"type":"WEB","url":"https://github.com/uutils/coreutils/releases/tag/0.7.0"}],"affected":[{"package":{"name":"uu_mv","ecosystem":"crates.io","purl":"pkg:cargo/uu_mv"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.7.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h444-6j9x-p8vh/GHSA-h444-6j9x-p8vh.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L"}]}