CVE-2024-43819
CSIRTS triage
- What
- KVM on s390 fails to properly reject memory region operations for usercontrol VMs, allowing privilege escalation.
- Who is affected
- s390 systems running KVM with usercontrol VM support.
- Urgency
- Medium; privilege escalation requires local access to KVM.
- Action
- Apply kernel patches that enforce memory region operation rejection for ucontrol VMs.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2024-43819: kvm: s390: Reject memory region operations for ucontrol VMsmsrc · 2026-08-06
External references
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[](https://www.csirts.com/cve/CVE-2024-43819)