A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer. This heap buffer overflow can corrupt the root libvirt daemon's memory, potentially leading to a denial of service or local privilege escalation.
History

Thu, 20 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer. This heap buffer overflow can corrupt the root libvirt daemon's memory, potentially leading to a denial of service or local privilege escalation.
Title Libvirt: integer overflow in nodegetfreepages rpc handler leading to heap buffer overflow
First Time appeared Redhat
Redhat enterprise Linux
Redhat enterprise Linux Nvidia
Weaknesses CWE-190
CPEs cpe:/a:redhat:enterprise_linux_nvidia:
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat enterprise Linux Nvidia
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-20T15:36:10.363Z

Reserved: 2026-08-05T07:41:23.966Z

Link: CVE-2026-18917

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-20T10:16:40.507

Modified: 2026-08-20T13:08:53.900

Link: CVE-2026-18917

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.