{"id":"GHSA-pmf6-rcx4-v53v","revision":"836d24cc7e984cbda6e8eb3759735ed9","records":[{"revision":"836d24cc7e984cbda6e8eb3759735ed9","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-pmf6-rcx4-v53v","aliases":["CVE-2026-35341"],"title":"mkfifo: permissions of an existing file are changed after FIFO creation fails","description":"When `mkfifo()` fails (e.g. target already exists), the code shows an error but is missing a `continue;`, so it falls through to `fs::set_permissions` and changes the permissions of the pre-existing file to the default FIFO mode (`0o666` & umask -> `0644`).\n\n```\n$ touch secret; chmod 000 secret\n$ coreutils mkfifo secret fifo3 fifo4\nmkfifo: cannot create fifo 'secret': File exists\n$ ll secret      # uutils:\nprw-r--r-- secret   # changed to 644 (GNU leaves it 000)\n```\n\n**Impact:** an attacker (or user error) can relax permissions on sensitive owner-only files such as SSH private keys, exposing them to other users. Recommendation: add `continue;` after the error.\n\n**Remediation:** Acknowledged by Canonical; fixed in PR #10376.\n\n---\n_Reported by Zellic in the *uutils coreutils Program Security Assessment* (prepared for Canonical, Jan 20 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`. Finding 3.8. Credit: Zellic._\n\n_Upstream tracking issue: https://github.com/uutils/coreutils/issues/10020 · CVE-2026-35341_","state":0,"publishedAt":"2026-07-06T21:53:34+00:00","modifiedAt":"2026-07-06T22:11:26.860551+00:00","affected":[{"ecosystem":"crates.io","name":"uu_mkfifo","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.6.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/uutils/coreutils/security/advisories/GHSA-pmf6-rcx4-v53v","https://nvd.nist.gov/vuln/detail/CVE-2026-35341","https://github.com/uutils/coreutils/issues/10020","https://github.com/uutils/coreutils/pull/10376","https://github.com/uutils/coreutils"],"sourceUrl":"https://github.com/advisories/GHSA-pmf6-rcx4-v53v","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-pmf6-rcx4-v53v","identifiers":["GHSA-pmf6-rcx4-v53v","CVE-2026-35341"]},"retained":false,"historicalAffected":[]}],"coverage":[]}