CVE-2026-68253

High

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)

SeverityHigh
CVSS7.8
Exploit probability4. percentile0.1%
ProductLinux
PublishedAug 10, 2026
First seenAug 10, 2026

How to fix

Update
  • Linux Linux336cf6d80d41457442b659e7ba7a7badc0ffe79d, 389079bf04e6f0c6f10f5b879f6d7a9cf80f0567, 84351f12390349ba010920fc247e1a0b12e41eb3, 2106fb490b2c6003e23ad6ff36ce823a2170e138, 3d2ef8d389495e7889c6062d8bddc46d2a5fbdef, 984085c5b53572e2e03fd5fc4817e86ef1effc6e, bbb15a6b042d02e5508a02b4847e02d2579ee7bc or later

Affected products

ProductAffected versionsFixed in
Linux Linuxe03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < 336cf6d80d41457442b659e7ba7a7badc0ffe79d, e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < 389079bf04e6f0c6f10f5b879f6d7a9cf80f0567, e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < 84351f12390349ba010920fc247e1a0b12e41eb3, e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < 2106fb490b2c6003e23ad6ff36ce823a2170e138, e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < 3d2ef8d389495e7889c6062d8bddc46d2a5fbdef, e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < 984085c5b53572e2e03fd5fc4817e86ef1effc6e, e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 ≤ v < bbb15a6b042d02e5508a02b4847e02d2579ee7bc, 5.12336cf6d80d41457442b659e7ba7a7badc0ffe79d, 389079bf04e6f0c6f10f5b879f6d7a9cf80f0567, 84351f12390349ba010920fc247e1a0b12e41eb3, 2106fb490b2c6003e23ad6ff36ce823a2170e138, 3d2ef8d389495e7889c6062d8bddc46d2a5fbdef, 984085c5b53572e2e03fd5fc4817e86ef1effc6e, bbb15a6b042d02e5508a02b4847e02d2579ee7bc

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