{"id":"GHSA-gwm6-q8ch-hcfr","summary":"install -D: symlink race in directory creation allows arbitrary file overwrite","details":"The `-D` path runs `fs::create_dir_all` on a pathname then later opens the destination via path-based `File::create`/`fs::copy`, neither anchored to a directory fd. Between the two, an attacker can replace a path component with a symlink, redirecting the write.\n\n**Impact:** an attacker with concurrent write access to the destination tree can redirect a privileged `install -D` to an arbitrary location, enabling arbitrary file overwrite with attacker-controlled content. Recommendation: use dirfd-based traversal (`openat`/`mkdirat` + `O_NOFOLLOW`) per component and create the destination via `openat` on the same dirfd.\n\n**Remediation:** Acknowledged by Canonical; fixed in commit 0c412999.\n\n---\n_Reported by Zellic in the *uutils coreutils Program Security Assessment* (prepared for Canonical, Jan 20 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`. Finding 3.51. Credit: Zellic._","aliases":["CVE-2026-35356"],"modified":"2026-07-06T20:11:16.587934Z","published":"2026-07-06T19:54:56Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-367","CWE-59"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-07-06T19:54:56Z"},"references":[{"type":"WEB","url":"https://github.com/uutils/coreutils/security/advisories/GHSA-gwm6-q8ch-hcfr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35356"},{"type":"WEB","url":"https://github.com/uutils/coreutils/pull/10140"},{"type":"WEB","url":"https://github.com/uutils/coreutils/commit/0c41299975f3c1e21cf5ca968d42cad55ceb42a1"},{"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_install","ecosystem":"crates.io","purl":"pkg:cargo/uu_install"},"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-gwm6-q8ch-hcfr/GHSA-gwm6-q8ch-hcfr.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}