VULNERABILITY INTELLIGENCE
CVE-2026-18917
CVSS score7.8 HIGH
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-08-20
Last modified2026-10-27
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- secalert@redhat.com: CWE-190