CVE-2026-0665 Affecting libvirt-nss package, versions <0:9.0.0-16.module+el8.10.0+90872+a1d63504


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-ORACLE8-LIBVIRTNSS-16309003
  • published27 Apr 2026
  • disclosed18 Feb 2026

Introduced: 18 Feb 2026

CVE-2026-0665  (opens in a new tab)

How to fix?

Upgrade Oracle:8 libvirt-nss to version 0:9.0.0-16.module+el8.10.0+90872+a1d63504 or higher.
This issue was patched in ELSA-2026-50239.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-nss package and not the libvirt-nss package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption.

CVSS Base Scores

version 3.1