CVE-2026-68253

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.8
EG Score
7.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 17, 2026

Advisory Details (5)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

drm/i915/hdcp: check streams[] bounds before overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bbb15a6b042d02e5508a02b4847e02d2579ee7bc
generic

drm/i915/hdcp: check streams[] bounds before overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/984085c5b53572e2e03fd5fc4817e86ef1effc6e
generic

drm/i915/hdcp: check streams[] bounds before overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/84351f12390349ba010920fc247e1a0b12e41eb3
generic

drm/i915/hdcp: check streams[] bounds before overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d2ef8d389495e7889c6062d8bddc46d2a5fbdef
generic

drm/i915/hdcp: check streams[] bounds before overflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2106fb490b2c6003e23ad6ff36ce823a2170e138

Vendor Advisories for CVE-2026-68253(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 33× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 21:52 UTCGHSA enrichment
  3. 2026-08-20 10:58 UTCGHSA enrichment
  4. 2026-08-20 00:03 UTCEG score recompute
  5. 2026-08-20 00:03 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 13:07 UTCGHSA enrichment
  8. 2026-08-19 02:13 UTCGHSA enrichment
  9. 2026-08-18 15:18 UTCEG score recompute
  10. 2026-08-18 15:18 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 03:29 UTCGHSA enrichment
  14. 2026-08-17 16:33 UTCEG score recompute
  15. 2026-08-17 16:33 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 05:38 UTCEG score recompute
  18. 2026-08-17 05:38 UTCGHSA enrichment
  19. 2026-08-17 05:08 UTCEG score recompute
  20. 2026-08-17 05:08 UTCGHSA enrichment
  21. 2026-08-17 03:55 UTCGHSA enrichment
  22. 2026-08-16 17:00 UTCEG score recompute
  23. 2026-08-16 17:00 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 06:05 UTCEG score recompute
Show 20 more
  1. 2026-08-16 06:05 UTCGHSA enrichment
  2. 2026-08-15 19:11 UTCGHSA enrichment
  3. 2026-08-15 08:16 UTCEG score recompute
  4. 2026-08-15 08:16 UTCGHSA enrichment
  5. 2026-08-15 01:30 UTCEPSS rescore
  6. 2026-08-14 21:20 UTCGHSA enrichment
  7. 2026-08-14 10:24 UTCEG score recompute
  8. 2026-08-14 10:24 UTCGHSA enrichment
  9. 2026-08-13 23:29 UTCEG score recompute
  10. 2026-08-13 23:29 UTCGHSA enrichment
  11. 2026-08-13 22:44 UTCEG score recompute▲ 7.80
  12. 2026-08-13 22:44 UTCGHSA enrichment
  13. 2026-08-13 22:44 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 10:06 UTCEG score recompute
  16. 2026-08-13 10:06 UTCGHSA enrichment
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-10 13:24 UTCNVD update
  19. 2026-08-10 12:19 UTCEG score recompute
  20. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68253?
CVE-2026-68253 is a high vulnerability published on August 10, 2026. 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…
When was CVE-2026-68253 disclosed?
CVE-2026-68253 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68253 actively exploited?
CVE-2026-68253 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.0% of all scored CVEs.
What is the CVSS score of CVE-2026-68253?
CVE-2026-68253 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-68253?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68253, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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