CVE-2026-80551

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-80551

Key Details

CVE	CVE-2026-80551
CVSS Score / Version	9.3 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-80551
CVE	https://www.cve.org/CVERecord?id=CVE-2026-80551

Source

Reference

NVD

CVE