Integer Overflow or Wraparound Affecting libvirt-daemon-driver-storage-scsi package, versions <0:4.5.0-36.el7_9.7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-RHEL7-LIBVIRTDAEMONDRIVERSTORAGESCSI-20124106
  • published24 Sept 2026
  • disclosed12 Aug 2025

Introduced: 12 Aug 2025

CVE-2026-18917  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade RHEL:7 libvirt-daemon-driver-storage-scsi to version 0:4.5.0-36.el7_9.7 or higher.
This issue was patched in RHSA-2026:69114.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-daemon-driver-storage-scsi package and not the libvirt-daemon-driver-storage-scsi package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1