CVE-2026-74713: vhost_iotlb: bound map allocation in add_range
CSIRTS triage
- What
- vhost IOTLB map allocation lacks bounds checking in add_range.
- Who is affected
- Virtual machine hosts using vhost IOTLB for guest I/O.
- Urgency
- Medium priority; unbounded allocation risks denial of service.
- Action
- Apply kernel patch to bound map allocation in vhost_iotlb add_range.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74713
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-747130.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-74713 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for vhost_iotlb
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
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