CVE-2026-64106

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.

CVSS v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.5 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316
https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d
https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95
https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07
https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7
https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a

Configurations

No configuration.

History

20 Jul 2026, 15:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.0

19 Jul 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-19 16:17

Updated : 2026-07-20 15:17

NVD link : CVE-2026-64106

Mitre link : CVE-2026-64106

CVE.ORG link : CVE-2026-64106

JSON object : View

Products Affected

No product.

CWE

No CWE.

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