Bluetooth: btintel: validate DDC record lengths
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EPSS probability
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Risk score
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Published
8 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%61
Short explanation
A vulnerability exists in the Linux kernel Bluetooth btintel subsystem regarding the parsing of DDC record lengths due to storage wrapping issues. This flaw can cause incorrect record boundaries and improper validation before issuing commands.
Failing to properly validate length parameters in Bluetooth components can lead to memory safety issues and subsystem instability.
What should be done?
- Follow vendor advisories
- Apply kernel updates as available
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
Linux çekirdeğindeki Bluetooth btintel alt sistemi, DDC kayıt uzunluklarını imzasız depolamada ayrıştırarak 0xFF sarmasını önleyecek şekilde güncellenmiştir.
Intel_Write_DDC komutu yayınlanmadan önce üç baytlık başlıktan küçük, U8_MAX değerini aşan ve kalan bellenim baytlarını aşan kayıtlar reddedilir.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: validate DDC record lengths Parse DDC record lengths in unsigned storage so 0xFF does not wrap. Reject records smaller than the mandatory three-byte header, records exceeding U8_MAX, and records exceeding remaining firmware bytes before issuing Intel_Write_DDC. This issue was reported by Claude Mythos.
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
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| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98819 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98819 weaknesses.
Official Sources and Advisories
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