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EPSS 0.2%top 95%

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: ALSA: virtio: Validate control metadata from the device virtio-snd control… (CVE-2026-64490)

0
High
Published: 07/25/2026 (07/25/2026, 10:17:00 UTC)
Source: GCVE Database
Product: linux-hwe-edge

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: virtio: Validate control metadata from the device virtio-snd control handling trusts the device-provided control type and value count returned by the device. That metadata is then used directly to index g_v2a_type_map[] in virtsnd_kctl_info(), and to size loops and memcpy() operations in virtsnd_kctl_get() and virtsnd_kctl_put() against fixed-size virtio_snd_ctl_value and snd_ctl_elem_value arrays. A buggy or malicious device can therefore trigger out-of-bounds access by advertising an invalid control type or an oversized value count. Validate control type and count once in virtsnd_kctl_parse_cfg(), before querying enumerated items or exposing the control to ALSA.

CVSS v3.1

Score 8.4high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-4qj6-j88p-jqg9
Osv Schema Version
1.4.0
Aliases
["CVE-2026-64490"]
Ecosystems
[]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a6542079c2644c7f80829dc

Added to database: 07/25/2026, 23:08:55 UTC

Last enriched: 08/15/2026, 02:21:51 UTC

Last updated: 09/07/2026, 10:52:10 UTC

Views: 48

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