CVE-2026-68255

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-68255

Key Details

CVE	CVE-2026-68255
CVSS Score / Version	7.7 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

drm/virtio: bound EDID block reads to the response buffer

virtio_get_edid_block() validates the read offset only against the

device-supplied resp->size field, never against the fixed-size resp->edid

array. The EDID block index is driven by the device-supplied extension

count, so a malicious virtio-gpu backend can advertise a large size

together with a high block count and read far past the array into adjacent

kernel memory, which is then surfaced in the parsed EDID (an out-of-bounds

read / info leak).

Also reject any read whose end exceeds the size of the edid array.

Conforming EDID responses stay within the array and are unaffected. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68255
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68255

Source

Reference

NVD

CVE