CVE-2026-64490

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Source
https://cve.org/CVERecord?id=CVE-2026-64490
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64490.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-64490
Downstream
Related
Published
2026-07-25T08:51:48Z
Modified
2026-08-18T03:31:11Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ALSA: virtio: Validate control metadata from the device
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64490.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
d6568e3de42dd971a1356f7ba581e6600d53f0a0
Fixed
3243563f99ef5d3949b934bd6390a5679405d0e1
Fixed
5da9742de22db0dbaa8d414214ab5e1bedde00f9
Fixed
21584672fd699abe1768241d6c501b2de6139b6a
Fixed
c77a6cbb36ff8cbc1f084d94f8dcda5250935271

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64490.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.9.0
Fixed
6.12.96
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.39
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64490.json"