Answer in brief
CVE-2026-2243 records a Medium severity (CVSS 5.1) vulnerability in Qemu-kvm: heap buffer out-of-bounds read in vmdk compressed grain parsing. The current sources do not mark it as known exploited. The current feed maps Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), qemu (generic), Red Hat/qemu-kvm (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), qemu (generic), Red Hat/qemu-kvm (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/openshift/ose-rhel-coreos-8generic | * | Not reported |
| Red Hat/openshift/ose-rhel-coreos-9generic | * | Not reported |
| qemugeneric | >=0 <=10.2.1 | Not reported |
| Red Hat/qemu-kvmgeneric | * | Not reported |
| Red Hat/virt:rhel/qemu-kvmgeneric | * | Not reported |
Published upstream
Feb 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 21, 2026
A flaw was found in QEMU. A specially crafted VMDK image could trigger an out-of-bounds read vulnerability, potentially leading to a 12-byte leak of sensitive information or a denial of service condition (DoS).
Quoted source text, attributed separately from HOL analysis.