CVE-2026-68255
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
10/08/2026
Última modificación:
17/08/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
drm/virtio: bound EDID block reads to the response buffer<br />
<br />
virtio_get_edid_block() validates the read offset only against the<br />
device-supplied resp->size field, never against the fixed-size resp->edid<br />
array. The EDID block index is driven by the device-supplied extension<br />
count, so a malicious virtio-gpu backend can advertise a large size<br />
together with a high block count and read far past the array into adjacent<br />
kernel memory, which is then surfaced in the parsed EDID (an out-of-bounds<br />
read / info leak).<br />
<br />
Also reject any read whose end exceeds the size of the edid array.<br />
Conforming EDID responses stay within the array and are unaffected.
Impacto
Puntuación base 3.x
7.70
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/2757e6e803092cf0aeaf4b735e16b5d3bdc705c5
- https://git.kernel.org/stable/c/35be0e2c6862abcd5e5f5445261f1fd910d4a9b4
- https://git.kernel.org/stable/c/375c1934ef0196d3b6d3a1eae3232bef8dae7bf7
- https://git.kernel.org/stable/c/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd
- https://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42