CVE-2026-64106

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-64106

Key Details

CVE	CVE-2026-64106
CVSS Score / Version	9.0 (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:N/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 none; 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:

KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits

Userspace can restore an ITS Device Table Entry whose Size field encodes

more EventID bits than the virtual ITS supports. The live MAPD path

rejects that state, but vgic_its_restore_dte() accepts it and stores the

out-of-range value in dev->num_eventid_bits.

Reject restored DTEs with num_eventid_bits > VITS_TYPER_IDBITS before

allocating the device. This mirrors the MAPD check and prevents the

restored state from reaching vgic_its_restore_itt(), where the unchecked

value can be converted into an oversized scan_its_table() range. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-64106
CVE	https://www.cve.org/CVERecord?id=CVE-2026-64106

Source

Reference

NVD

CVE