CVE-2026-64490
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
25/07/2026
Última modificación:
27/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
ALSA: virtio: Validate control metadata from the device<br />
<br />
virtio-snd control handling trusts the device-provided control type and<br />
value count returned by the device.<br />
<br />
That metadata is then used directly to index g_v2a_type_map[] in<br />
virtsnd_kctl_info(), and to size loops and memcpy() operations in<br />
virtsnd_kctl_get() and virtsnd_kctl_put() against fixed-size<br />
virtio_snd_ctl_value and snd_ctl_elem_value arrays.<br />
<br />
A buggy or malicious device can therefore trigger out-of-bounds access by<br />
advertising an invalid control type or an oversized value count.<br />
<br />
Validate control type and count once in virtsnd_kctl_parse_cfg(), before<br />
querying enumerated items or exposing the control to ALSA.
Impacto
Puntuación base 3.x
8.40
Gravedad 3.x
ALTA