# CVE-2025-8067: Udisks: out-of-bounds read in udisks daemon Status: published. Published: 2025-08-28. Updated: 2026-11-04. A flaw was found in the Udisks daemon, where it allows unprivileged users to create loop devices using the D-BUS system. This is achieved via the loop device handler, which handles requests sent through the D-BUS interface. As two of the parameters of this handle, it receives the file descriptor list and index specifying the file where the loop device should be backed. The function itself validates the index value to ensure it isn't bigger than the maximum value allowed. However, it fails to validate the lower bound, allowing the index parameter to be a negative value. Under these circumstances, an attacker can cause the UDisks daemon to crash or perform a local privilege escalation by gaining access to files owned by privileged users. ## Remediation - workaround: There's no available mitigation other than installing the updated package as soon as available. (source: CNA: redhat) ## Affected products and versions - storaged-project / udisks (udisks2): ≥ 0; < 2.10.2 (affected, semver); ≥ 2.10.3; < 2.10.91 (affected, semver). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 10 (udisks2): ≥ 0:2.10.90-5.el10_0.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support (udisks2): ≥ 0:2.8.4-1.el7_9.2; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8 (udisks2): ≥ 0:2.9.0-16.el8_10.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support (udisks2): ≥ 0:2.8.3-2.el8_2.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support (udisks2): ≥ 0:2.9.0-6.el8_4.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On (udisks2): ≥ 0:2.9.0-6.el8_4.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support (udisks2): ≥ 0:2.9.0-9.el8_6.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.6 Telecommunications Update Service (udisks2): ≥ 0:2.9.0-9.el8_6.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions (udisks2): ≥ 0:2.9.0-9.el8_6.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service (udisks2): ≥ 0:2.9.0-13.el8_8.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions (udisks2): ≥ 0:2.9.0-13.el8_8.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 9 (udisks2): ≥ 0:2.9.4-11.el9_6.1; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions (udisks2): ≥ 0:2.9.4-3.el9_0.2; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions (udisks2): ≥ 0:2.9.4-7.el9_2.2; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 9.4 Extended Update Support (udisks2): ≥ 0:2.9.4-10.el9_4.2; < * (unaffected, rpm). Source: CNA: redhat - Red Hat / Red Hat Enterprise Linux 6 (udisks): Version range not reported. Source: CNA: redhat ## Severity and prioritization - CVSS 3.1: 8.5 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H; source: CNA: redhat - CVSS 3.1: 8.5 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H; source: NVD: secalert@redhat.com - CISA KEV: No listing in collected sources - EPSS: 0.65% as of 2026-11-04; percentile 51.33% - SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP - Weaknesses: CWE-125 ## Exploit evidence No exploit evidence in collected sources. This is not proof of no exploitation. ## References - https://access.redhat.com/errata/RHSA-2025:15017 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:15018 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:15020 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:15956 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16021 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16090 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16106 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16121 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16122 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16125 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/errata/RHSA-2025:16130 (CNA: redhat; vendor-advisory, x_refsource_REDHAT) - https://access.redhat.com/security/cve/CVE-2025-8067 (CNA: redhat; vdb-entry, x_refsource_REDHAT) - https://bugzilla.redhat.com/show_bug.cgi?id=2388623 (CNA: redhat; issue-tracking, x_refsource_REDHAT) - https://lists.debian.org/debian-lts-announce/2025/08/msg00023.html (ADP: CVE) - http://www.openwall.com/lists/oss-security/2025/08/28/1 (ADP: CVE) - https://access.redhat.com/errata/RHSA-2025:15017 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:15018 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:15020 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:15956 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16021 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16090 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16106 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16121 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16122 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16125 (secalert@redhat.com) - https://access.redhat.com/errata/RHSA-2025:16130 (secalert@redhat.com) - https://access.redhat.com/security/cve/CVE-2025-8067 (secalert@redhat.com) - https://bugzilla.redhat.com/show_bug.cgi?id=2388623 (secalert@redhat.com) - http://www.openwall.com/lists/oss-security/2025/08/28/1 (af854a3a-2127-422b-91ae-364da2661108) - https://lists.debian.org/debian-lts-announce/2025/08/msg00023.html (af854a3a-2127-422b-91ae-364da2661108) ## Provenance - CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2025-8067; retrieved 2026-11-04; source updated 2026-11-04 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8067; retrieved 2026-11-05; source updated 2026-11-04 - FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2025-8067; retrieved 2026-11-04; source updated Not reported Revision: 52d1a700767c06a554c14d7714a5751993fcea2be0d6d70e1f2ea386824e5a07 Canonical: https://y2.dev/cve/CVE-2025-8067 ## Agent and API access Public CVE pages, Markdown, and JSON are free to read without an account or API key. - Public catalog: https://y2.dev/cve/index.json. 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