CVE-2026-63623: Incorrect Permission Assignment for Critical Resource in Red Hat Red Hat Enterprise Linux 10
A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents. This vulnerability could lead to sensitive information disclosure from guest virtual machines.
CVE-2026-63623: Incorrect Permission Assignment for Critical Resource in Red Hat Red Hat Enterprise Linux 10
Description
A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents. This vulnerability could lead to sensitive information disclosure from guest virtual machines.
CVSS v3.1
Score 5.5medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-17T13:06:13.760Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-63623","vendor":"Red Hat"}]
Threat ID: 6a7a02d3bf8831d53930c680
Added to database: 08/10/2026, 16:56:51 UTC
Last updated: 08/10/2026, 17:05:39 UTC
Views: 4
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