---
id: CVE-2026-68253
title: |-
  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
summary: |-
  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 chec…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
published: '2026-08-10'
updated: '2026-08-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68253'
references:
  - url: 'https://git.kernel.org/stable/c/2106fb490b2c6003e23ad6ff36ce823a2170e138'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/336cf6d80d41457442b659e7ba7a7badc0ffe79d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/389079bf04e6f0c6f10f5b879f6d7a9cf80f0567'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3d2ef8d389495e7889c6062d8bddc46d2a5fbdef'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/84351f12390349ba010920fc247e1a0b12e41eb3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/984085c5b53572e2e03fd5fc4817e86ef1effc6e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bbb15a6b042d02e5508a02b4847e02d2579ee7bc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.0019
epssPercentile: 0.07695
ingestedAt: '2026-08-23T13:48:06.735Z'
---

## Overview

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)

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.