drm/i915/hdcp: check streams[] bounds before overflow

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68253
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:13 UTC
Updated2026-08-23 13:16:35 UTC
DescriptionIn 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)

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001420000 probability, percentile 0.037650000 (date 2026-08-24)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 336cf6d80d41457442b659e7ba7a7badc0ffe79d git Not specified
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 389079bf04e6f0c6f10f5b879f6d7a9cf80f0567 git Not specified
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 84351f12390349ba010920fc247e1a0b12e41eb3 git Not specified
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 2106fb490b2c6003e23ad6ff36ce823a2170e138 git Not specified
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 3d2ef8d389495e7889c6062d8bddc46d2a5fbdef git Not specified
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 984085c5b53572e2e03fd5fc4817e86ef1effc6e git Not specified
CNA Linux Linux affected e03187e12cae57c09b521b6f7dd7c7f9aa2b62e9 bbb15a6b042d02e5508a02b4847e02d2579ee7bc git Not specified
CNA Linux Linux affected 5.12 Not specified
CNA Linux Linux unaffected 5.12 semver Not specified
CNA Linux Linux unaffected 5.15.217 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.184 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.151 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3d2ef8d389495e7889c6062d8bddc46d2a5fbdef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/389079bf04e6f0c6f10f5b879f6d7a9cf80f0567 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2106fb490b2c6003e23ad6ff36ce823a2170e138 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/84351f12390349ba010920fc247e1a0b12e41eb3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/984085c5b53572e2e03fd5fc4817e86ef1effc6e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bbb15a6b042d02e5508a02b4847e02d2579ee7bc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/336cf6d80d41457442b659e7ba7a7badc0ffe79d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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