CVE-2026-64106

Medium

Elevated severity or exploit probability.

CVSS base

9.0 CRITICAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

EPSS — probability of exploitation (30 days)

0.1%

4.4th percentile

CISA KEV

Not listed

Weakness / dates

—

Published 2026-07-19 · modified 2026-08-12

CVSS breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

Attack Vector	L	Local
Attack Complexity	L	Low
Privileges Required	N	None
User Interaction	N	None
Scope	C	Changed
Confidentiality	H	High
Integrity	N	None
Availability	H	High

Timeline

2026-07-19 — Published (NVD)
2026-08-12 — Last modified (NVD)

Description

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.

Affected

linux

References

Official: NVD · CVE.org