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.
Metrics
Affected Vendors & Products
References
History
Wed, 18 Feb 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 18 Feb 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | qemu-kvm: Heap off-by-one in KVM Xen PHYSDEVOP_map_pirq | Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| References |
|
Tue, 13 Jan 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | qemu-kvm: Heap off-by-one in KVM Xen PHYSDEVOP_map_pirq | |
| Weaknesses | CWE-125 CWE-787 |
|
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
Status: PUBLISHED
Assigner: fedora
Published:
Updated: 2026-02-18T21:27:14.216Z
Reserved: 2026-01-07T12:09:11.643Z
Link: CVE-2026-0665
Updated: 2026-02-18T21:27:06.428Z
Status : Received
Published: 2026-02-18T21:16:22.633
Modified: 2026-02-18T21:16:22.633
Link: CVE-2026-0665