{"id":"CVE-2026-35361","aliases":["DEBIAN-CVE-2026-35361","EUVD-2026-25004","GHSA-79rc-qpw3-jv92","GHSA-r9hw-mj3w-phcq","UBUNTU-CVE-2026-35361"],"status":"published","title":"uutils coreutils mknod Security Label Inconsistency and Broken Cleanup on SELinux Systems","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","severity":{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00142,"percentile":0.03596,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-281","CWE-459","CWE-732"],"published":"2026-04-22T16:08:30Z","modified":"2026-10-28T02:31:14Z","fixes":[{"ecosystem":"crates.io","package":"uu_mknod","fixed_in":["0.6.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:14","package":"rust-coreutils","fixed_in":["0.6.0-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"uu_mknod","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"rust-coreutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.17-2","0.0.17-3","0.0.17-4","0.0.17-5","0.0.17-6","0.0.19-1","0.0.19-2","0.0.19-3","0.0.20-1","0.0.21-1","0.0.22-1","0.0.23-1","0.0.23-2","0.0.23-3","0.0.24-1","0.0.24-2","0.0.26-1","0.0.26-2","0.0.26-3","0.0.26-4","0.0.26-5","0.0.27-1","0.0.27-2","0.0.27-3","0.0.30-1","0.0.30-2","0.0.30-3","0.0.30-3~exp1","0.0.30-4","0.10.0-1","0.11.0-1","0.11.0-2","0.12.0-1","0.6.0-1","0.7.0-1","0.8.0-1","0.8.0-2","0.8.0-3","0.8.0-4","0.8.0-5","0.8.0-6","0.9.0-1","0.9.0-2","0.9.0-3"]},{"source":"osv","ecosystem":"Debian:13","package":"rust-coreutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.30-2","0.0.30-3","0.0.30-3~exp1","0.0.30-4","0.10.0-1","0.11.0-1","0.11.0-2","0.12.0-1","0.6.0-1","0.7.0-1","0.8.0-1","0.8.0-2","0.8.0-3","0.8.0-4","0.8.0-5","0.8.0-6","0.9.0-1","0.9.0-2","0.9.0-3"]},{"source":"osv","ecosystem":"Debian:14","package":"rust-coreutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.0-1"}]}],"versions":["0.0.30-2","0.0.30-3","0.0.30-3~exp1","0.0.30-4"]},{"source":"osv","ecosystem":"crates.io","package":"uu_mknod","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.6.0"}]}]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"rust-coreutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20-1","0.0.22-1","0.0.23-1","0.0.23-2","0.0.23-3","0.0.24-1","0.0.24-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"rust-coreutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.30-1","0.0.30-2","0.0.30-2ubuntu2","0.1.0-0ubuntu1","0.1.0+git20250711.2ba3a33-0ubuntu1","0.1.0+git20250711.2ba3a33-0ubuntu2","0.1.0+git20250711.2ba3a33-0ubuntu3","0.1.0+git20250711.2ba3a33-0ubuntu4","0.1.0+git20250801.cf79675-0ubuntu1","0.1.0+git20250813.4af2a84-0ubuntu2","0.1.0+git20250813.4af2a84-0ubuntu4","0.1.0+git20250813.4af2a84-0ubuntu6","0.1.0+git20250813.4af2a84-0ubuntu7","0.2.2-0ubuntu1","0.2.2-0ubuntu2","0.2.2-0ubuntu2.1"]}],"products":[{"vendor":"uutils","product":"coreutils"}],"references":[{"url":"https://github.com/uutils/coreutils/pull/10582","tags":["issue-tracking","patch","exploit","Exploit","Issue Tracking","Patch","fix","web","report"]},{"url":"https://github.com/uutils/coreutils/releases/tag/0.6.0","tags":["vendor-advisory","Release Notes","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35361","tags":["advisory"]},{"url":"https://github.com/uutils/coreutils/commit/42b2ad83cdcf6e959ecb378c5040c60d9c64becf","tags":["web"]},{"url":"https://github.com/advisories/GHSA-79rc-qpw3-jv92"},{"url":"https://github.com/uutils/coreutils/security/advisories/GHSA-r9hw-mj3w-phcq","tags":["web"]},{"url":"https://github.com/advisories/GHSA-r9hw-mj3w-phcq"},{"url":"https://github.com/uutils","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35361.json","tags":["advisory"]},{"url":"https://github.com/uutils/coreutils","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-35361","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-35361","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-35361","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-35361","title":"uutils coreutils mknod Security Label Inconsistency and Broken Cleanup on SELinux Systems","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"published","published":"2026-04-22T16:08:30.756Z","modified":"2026-04-22T17:35:15.707Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-281","CWE-459"],"updated_at":"2026-11-02T14:20:05.15083Z"}],"euvd":[{"id":"EUVD-2026-25004","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"published","published":"2026-04-22T16:08:30Z","modified":"2026-04-22T17:35:15Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T19:24:20.283712Z"}],"ghsa":[{"id":"GHSA-79rc-qpw3-jv92","title":"Duplicate Advisory: uutils coreutils has an Improper Preservation of Permissions issue","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-r9hw-mj3w-phcq. This link is maintained to preserve external references.\n\n### Original Description\nThe mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"withdrawn","published":"2026-04-22T18:31:45Z","modified":"2026-07-06T21:53:57Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-281"],"updated_at":"2026-11-02T14:40:40.389795Z"},{"id":"GHSA-r9hw-mj3w-phcq","title":"mknod: Device nodes created mislabeled on SELinux, with broken cleanup (remove_dir on a node)","description":"uutils calls `mknod` *before* setting the SELinux context (GNU uses `setfscreatecon` first, labeling atomically). If `set_selinux_security_context` fails, cleanup uses `std::fs::remove_dir`, which cannot remove device nodes or FIFOs, leaving the mislabeled node behind.\n\n**Impact:** on SELinux-enforcing systems the node is created with the wrong context; the command reports failure but leaves a mislabeled device node that may bypass mandatory access control, and orphaned nodes can persist across reboots. Recommendation: use `setfscreatecon` before `mknod`, abort on failure, and use `remove_file` for cleanup.\n\n**Remediation:** Acknowledged by Canonical.\n\n---\n_Reported by Zellic in the *uutils coreutils Program Security Assessment* (prepared for Canonical, Jan 20 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`. Finding 3.58. Credit: Zellic._","status":"published","published":"2026-07-06T21:54:05Z","modified":"2026-07-06T21:54:06Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-281","CWE-459","CWE-732"],"updated_at":"2026-11-02T14:40:40.389795Z"}],"nvd":[{"id":"CVE-2026-35361","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"published","published":"2026-04-22T17:16:38.827Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-281","CWE-459"],"updated_at":"2026-11-02T14:12:15.867234Z"}],"osv":[{"id":"CVE-2026-35361","title":"uutils coreutils mknod Security Label Inconsistency and Broken Cleanup on SELinux Systems","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"published","published":"2026-04-22T16:08:30.756Z","modified":"2026-10-28T02:31:14.340451901Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-281","CWE-459"],"updated_at":"2026-11-02T15:45:02.673625Z"},{"id":"DEBIAN-CVE-2026-35361","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"published","published":"2026-04-22T17:16:38.827Z","modified":"2026-10-27T09:47:41.261029312Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"GHSA-79rc-qpw3-jv92","title":"Duplicate Advisory: uutils coreutils has an Improper Preservation of Permissions issue","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-r9hw-mj3w-phcq. This link is maintained to preserve external references.\n\n### Original Description\nThe mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"withdrawn","published":"2026-04-22T18:31:45Z","modified":"2026-09-10T03:50:43.712113098Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-281"],"updated_at":"2026-11-02T15:46:41.002603Z"},{"id":"GHSA-r9hw-mj3w-phcq","title":"mknod: Device nodes created mislabeled on SELinux, with broken cleanup (remove_dir on a node)","description":"uutils calls `mknod` *before* setting the SELinux context (GNU uses `setfscreatecon` first, labeling atomically). If `set_selinux_security_context` fails, cleanup uses `std::fs::remove_dir`, which cannot remove device nodes or FIFOs, leaving the mislabeled node behind.\n\n**Impact:** on SELinux-enforcing systems the node is created with the wrong context; the command reports failure but leaves a mislabeled device node that may bypass mandatory access control, and orphaned nodes can persist across reboots. Recommendation: use `setfscreatecon` before `mknod`, abort on failure, and use `remove_file` for cleanup.\n\n**Remediation:** Acknowledged by Canonical.\n\n---\n_Reported by Zellic in the *uutils coreutils Program Security Assessment* (prepared for Canonical, Jan 20 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`. Finding 3.58. Credit: Zellic._","status":"published","published":"2026-07-06T21:54:05Z","modified":"2026-07-06T22:11:17.087839Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-281","CWE-459","CWE-732"],"updated_at":"2026-11-02T15:46:55.480549Z"},{"id":"UBUNTU-CVE-2026-35361","description":"The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.","status":"published","published":"2026-04-22T17:16:00Z","modified":"2026-05-14T14:41:41.436865Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:16.686388Z"}]}}