What is CVE-2026-63806?

CVE-2026-63806 is a high-severity vulnerability in Linux. CVSS score: 7.1/10. Published 2026-07-19.

How severe is CVE-2026-63806?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Linux

CVE-2026-63806

In the Linux kernel, the following vulnerability has been resolved: KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned() Drop a BUG_ON() that has been reachable since it was first added, way back in 2009, a…

EPSS: 0.002 (7.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Linux — versions d34e6b175e61821026893ec5298cc8e7558df43a, 2.6.32, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

Frequently asked questions

What is CVE-2026-63806?: CVE-2026-63806 is a high-severity vulnerability in Linux. CVSS score: 7.1/10. Published 2026-07-19.
How severe is CVE-2026-63806?: High severity. CVSS v3 base score is 7.1 out of 10.