CVE-2026-68253

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-68253

Key Details

CVE	CVE-2026-68253
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; 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/i915/hdcp: check streams[] bounds before overflow

The data->streams[] overflow check is done after the buffer overflow has

already happened. Move the overflow check before the write.

Side note, emitting a warning splat with a backtrace might be overkill

here, but prefer not changing the behaviour other than not doing the

overrun.

Discovered using AI-assisted static analysis confirmed by Intel Product

Security.

(cherry picked from commit 9284ab3b6e776c315883ac2611283d263c9460fd) (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68253
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68253

Source

Reference

NVD

CVE