CVE-2026-0665
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- CVE-2026-0665
CVE Details
| Release Date: | 2026-02-18 | |
| Impact: | Moderate | What is this? |
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.
See more information about CVE-2026-0665 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 6.5 |
| Vector String: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
| Version: | 3.1 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Changed |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (hivex) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libguestfs) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libiscsi) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libnbd) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libtpms) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libvirt) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (nbdkit) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (netcf) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (seabios) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (sgabios) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (supermin) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (swtpm) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (virt-v2v) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 9 (qemu-kvm) | ELSA-2026-50241 | 2026-04-24 |
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