GCVE-1988-2026-0170
Vulnerability from gna-1988 – Published: 2026-09-07 13:44 – Updated: 2026-09-11 11:36
VLAI
EPSS
VEX
Title
The DCHECK Illusion: Chrome's "Trusted Path" Policy Creates Vulnerabilities
Summary
Subject: The DCHECK Illusion: Chrome's "Trusted Path" Policy Creates
Vulnerabilities
Full article:
https://potatobullet.com/chrome-dcheck-illusion-trusted-path-vulnerabilities/
Summary: An analysis of Chrome Mojo IPC finding 296 DCHECK instances across
mojo/core/ and mojo/public/cpp/bindings/lib/, at least 15 guarding
security-relevant conditions (bounds checks, offset validation, handle
state)
with ZERO protection in release builds. Error Principle classification:
Omission Debt with Dₑ = 0.95. Root cause is architectural — DCHECK as
security
boundary — not individual bugs.
Key numbers:
- 296 DCHECK instances in Mojo IPC
- 15+ guard security-critical conditions (compiled out in NDEBUG)
- CVE-2022-3075 ($100K+ bounty), CVE-2025-2783 same class, same root cause
- VRP-001 (2026) same class → dismissed "not a security bug"
- VRP-005 DataPipe DCHECK OOB → dismissed in 6 minutes
- No existing mitigation (MiraclePtr, CFG, ACG, ASLR, Site Isolation)
blocks this
Fix: Promote DCHECK to CHECK or if-return for all data crossing
renderer→browser IPC boundary.
— Shrikant Bhosale (The Debt Collector)
_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: https://seclists.org/fulldisclosure/
Severity
No CVSS data available.
Assigner
References
5 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| The | DCHECK Illusion |
Affected:
unknown
|
guessed |
Relationships
reference
GCVE-1988-2026-0170 (this record)
- related CVE-2022-3075
- related CVE-2025-2783
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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