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CVE Vulnerability Details :
CVE-2026-0665
PUBLISHED
More InfoOfficial Page
Assigner-fedora
Assigner Org ID-92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5
View Known Exploited Vulnerability (KEV) details
Published At-18 Feb, 2026 | 20:50
Updated At-18 Feb, 2026 | 21:27
Rejected At-
▼CVE Numbering Authority (CNA)
Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq

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.

Affected Products
Collection URL
https://gitlab.com/qemu-project/qemu
Package Name
qemu
Default Status
unaffected
Versions
Affected
  • From 8.0.0 through 10.2.0 (semver)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
qemu-kvm
CPEs
  • cpe:/o:redhat:enterprise_linux:10
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 6
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
qemu-kvm
CPEs
  • cpe:/o:redhat:enterprise_linux:6
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
qemu-kvm
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
qemu-kvm-ma
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
virt:rhel/qemu-kvm
CPEs
  • cpe:/o:redhat:enterprise_linux:8
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
qemu-kvm
CPEs
  • cpe:/o:redhat:enterprise_linux:9
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat OpenShift Container Platform 4
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhcos
CPEs
  • cpe:/a:redhat:openshift:4
Default Status
unaffected
Problem Types
TypeCWE IDDescription
CWECWE-787Out-of-bounds Write
Type: CWE
CWE ID: CWE-787
Description: Out-of-bounds Write
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Reported to Red Hat.2026-01-12 00:00:00
Made public.2026-01-09 00:00:00
Event: Reported to Red Hat.
Date: 2026-01-12 00:00:00
Event: Made public.
Date: 2026-01-09 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-0665
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2428640
issue-tracking
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-0665
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2428640
Resource:
issue-tracking
x_refsource_REDHAT
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found