SEPTEMBER 15, 2026
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Case File

CVE-2026-80551

CRITICAL · CVSS 9.3 EPSS 0.14%

Source: NVD + CISA KEV + EPSS · Published 2026-08-26 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

The vulnerability affects the Linux kernel, specifically in the s390/vfio_ccw component, where the first IDAW may not be properly aligned, potentially leading to inconsistent buffer size calculations and data integrity issues. This could allow for exploitation that compromises the stability and security of systems utilizing this kernel feature. Organizations using Linux on s390 architecture should prioritize addressing this vulnerability to mitigate risks associated with data corruption and system reliability.

CVE
CVE-2026-80551
Severity
CRITICAL
CVSS
9.3
EPSS
0.14%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Ensure first IDAW remains constant The first IDAW in a list does not need to be on a 2K/4K boundary like all others, and so is read separately to accurately calculate the size of the buffer needed to read the full IDAL. Verify that the address found in the first IDAW is unchanged between reads, to ensure a consistent set of IDAWs being worked with.