CVE-2026-68253

HighCVSS 7.8/10Last modified Oct 19, 2026

Description

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)

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < 336cf6d80d41457442b659e7ba7a7badc0ffe79d; >= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < 389079bf04e6f0c6f10f5b879f6d7a9cf80f0567; >= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < 84351f12390349ba010920fc247e1a0b12e41eb3; >= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < 2106fb490b2c6003e23ad6ff36ce823a2170e138; >= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < 3d2ef8d389495e7889c6062d8bddc46d2a5fbdef; >= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < 984085c5b53572e2e03fd5fc4817e86ef1effc6e; >= e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9, < bbb15a6b042d02e5508a02b4847e02d2579ee7bc
LinuxLinux5.12

References

Timeline

Published
Aug 10, 2026
Last modified
Oct 19, 2026
NVD status
Received

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CVE-2026-68253: High severity, CVSS 7.8 | Vulnix