Local privilege escalation via negative file-descriptor index
Published Aug 28, 2025 · Updated Jun 29, 2026
Out-of-bounds read in UDisks before 2.10.2 and 2.10.3 through 2.10.90 allows local users to crash udisksd or access privileged files. The loop-device D-Bus handler checks whether the supplied file-descriptor index exceeds the list but fails to reject negative values, causing an out-of-bounds lookup. Local system-bus access is sufficient; a crafted request can stop the storage daemon or map a daemon-owned file descriptor onto a loop device for privilege escalation.
Summary
What happened
Out-of-bounds read in UDisks before 2.10.2 and 2.10.3 through 2.10.90 allows local users to crash udisksd or access privileged files. The loop-device D-Bus handler checks whether the supplied file-descriptor index exceeds the list but fails to reject negative values, causing an out-of-bounds lookup. Local system-bus access is sufficient; a crafted request can stop the storage daemon or map a daemon-owned file descriptor onto a loop device for privilege escalation.
The record
- CVE
- CVE-2025-8067
- Published
- Aug 28, 2025
- Updated
- Jun 29, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
- Classifications
- CWE-125, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 28, 2025CVE publishedPublication date reported by the CVE source.
- Jun 29, 2026Record updatedLatest update available in the CVE record.
Exploitability
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What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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