CVE-2026-74515

highCVSS 8.8covered by 1 sourcefirst seen 2026-08-15

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its already enabled for the zPCI device. This also fixes overwriting and thus leaking resources when the ioctl is called multiple times for the same device.

⚡ Watch CVE-2026-74515

Get an email if CVE-2026-74515 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.

Exploitation outlook

Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-74515: In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject ada…nvd · 2026-08-15

External references

NVD record for CVE-2026-74515

CVE.org record

Embed the live status

— this badge updates automatically when the KEV or exploit status changes. How to embed it →

[![CVE-2026-74515 status](https://www.csirts.com/badge/CVE-2026-74515)](https://www.csirts.com/cve/CVE-2026-74515)