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)
References7
- git.kernel.org/stable/c/2106fb490b2c6003e23ad6ff36ce823a2170e138
- git.kernel.org/stable/c/336cf6d80d41457442b659e7ba7a7badc0ffe79d
- git.kernel.org/stable/c/389079bf04e6f0c6f10f5b879f6d7a9cf80f0567
- git.kernel.org/stable/c/3d2ef8d389495e7889c6062d8bddc46d2a5fbdef
- git.kernel.org/stable/c/84351f12390349ba010920fc247e1a0b12e41eb3
- git.kernel.org/stable/c/984085c5b53572e2e03fd5fc4817e86ef1effc6e
- git.kernel.org/stable/c/bbb15a6b042d02e5508a02b4847e02d2579ee7bc
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 4 · as of 12 November 2026
- CWE
- CWE-787
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.