CVE-2026-68253

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)

CVSS 3.1

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

EPSS

0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2026-08-10

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/2106fb490b2c6003e23ad6ff36ce823a2170e138
• https://git.kernel.org/stable/c/336cf6d80d41457442b659e7ba7a7badc0ffe79d
• https://git.kernel.org/stable/c/389079bf04e6f0c6f10f5b879f6d7a9cf80f0567
• https://git.kernel.org/stable/c/3d2ef8d389495e7889c6062d8bddc46d2a5fbdef
• https://git.kernel.org/stable/c/84351f12390349ba010920fc247e1a0b12e41eb3

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