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This CVE record has been marked for NVD enrichment efforts.
Description
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.
Metrics
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CVE Modified by Red Hat, Inc.9/18/2025 11:15:39 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16130
CVE Modified by Red Hat, Inc.9/18/2025 12:15:58 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16125
CVE Modified by Red Hat, Inc.9/17/2025 3:15:47 PM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16121
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16122
CVE Modified by Red Hat, Inc.9/17/2025 12:15:36 PM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16106
CVE Modified by Red Hat, Inc.9/17/2025 11:15:43 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16090
CVE Modified by Red Hat, Inc.9/16/2025 5:15:34 PM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:16021
CVE Modified by Red Hat, Inc.9/16/2025 9:16:12 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:15956
CVE Modified by Red Hat, Inc.9/02/2025 5:15:33 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2025:15017
Added
Reference
https://access.redhat.com/errata/RHSA-2025:15018
Added
Reference
https://access.redhat.com/errata/RHSA-2025:15020
New CVE Received from Red Hat, Inc.8/28/2025 11:16:03 AM
Action
Type
Old Value
New Value
Added
Description
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.