{"id":"CVE-2026-111581","title":"A flaw was found in libblockdev","summary":"A flaw was found in libblockdev. The bd_fs_ntfs_set_label() and bd_fs_vfat_set_label() functions pass caller-supplied label values as bare positional arguments to the ntfslabel and fatlabel utilities without end-of-options separators or …","severity":"low","cvss":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-88"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","affected":["enterprise_linux 10","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:23:18.623","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-111581","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-111581","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554104","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-111581.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-111581"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111581"}],"tags":["nvd","csaf","vex","red-hat","cve.org"],"epss":0.00126,"epssPercentile":0.02302,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T16:32:08.637542Z"},"ingestedAt":"2026-10-16T18:43:08.841Z","slug":"CVE-2026-111581","body":"## Overview\n\nA flaw was found in libblockdev. The bd_fs_ntfs_set_label() and bd_fs_vfat_set_label() functions pass caller-supplied label values as bare positional arguments to the ntfslabel and fatlabel utilities without end-of-options separators or input validation for values beginning with a dash. This allows a label starting with '-' to be interpreted as a command-line flag by the spawned tool, potentially bypassing safety checks or causing unintended operations. This is reachable by unprivileged local users through the udisks2 Filesystem.SetLabel() D-Bus method without administrator authentication.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-111581.json)","depth":"sunlit","depthScore":18,"depthScoreParts":{"impact":18.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}