CVE-2026-0665

MEDIUM

6.5

Description

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/18/2026

Last Modified2/19/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-787

References

https://access.redhat.com/security/cve/CVE-2026-0665(patrick@puiterwijk.org)

https://bugzilla.redhat.com/show_bug.cgi?id=2428640(patrick@puiterwijk.org)

IOC Correlations

No correlations recorded

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