cve-2026-64106
CRITICAL CVSS 9.0 opencve
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.
Timeline
- Published
- 2026-07-19 16:17 UTC
- Last Modified
- 2026-08-12
CVSS Details
CVSS details not available.
Affected Products
No product information available.
Weaknesses (CWE)
CVSS metrics
| Version | Base | Severity | Vector | Exploitability | Impact | Source |
|---|---|---|---|---|---|---|
| 3.1 | 9.0 | CRITICAL | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H |
mitre | ||
| 3.1 | 9.0 | CRITICAL | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H |
nvd | ||
| 3.1 | 9.0 | CRITICAL | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H |
opencve | ||
| 3.1 | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
redhat |
References
No references available.
Linked Vulnerabilities
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"redhat_repo_path": "2026/CVE-2026-64106.json",
"references": [
"https://lore.kernel.org/linux-cve-announce/2026071921-CVE-2026-64106-767b@gregkh/T",
"https://nvd.nist.gov/vuln/detail/CVE-2026-64106",
"https://www.cve.org/CVERecord?id=CVE-2026-64106"
],
"title": "kernel: KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits",
"updated": "2026-07-19T00:00:00+00:00",
"vendors": [],
"weaknesses": [
"CWE-805"
]
}
}
Enrichment data
Aggregated bundle (all enrichments)