USB: serial: fix driver deregistration order
CVSS score
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EPSS probability
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Risk score
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Published
14 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
Tam uyum
Evidence confidence
%63
Short explanation
A vulnerability in the Linux kernel stems from an improper USB serial driver deregistration order. When unloading a driver module, failing to deregister the USB driver before the USB serial bus drivers can lead to a use-after-free condition in completion handlers.
This vulnerability addresses a driver deregistration ordering flaw in the Linux kernel that can compromise memory integrity and trigger use-after-free conditions during port data access by completion handlers.
What should be done?
- Follow vendor advisories and official updates
- Apply provided patches and updates for the Linux kernel
- Ensure driver module unloading follows the correct sequence
Chain of evidence and sources
Linux çekirdeğindeki USB seri sürücü modülleri, USB veri yolu ve portlar için sürücüler kaydetmektedir.
Sürücü modülü kaldırılırken USB sürücüsünün USB seri veri yolu sürücülerinden önce kaydı silinmelidir.
Doğru olmayan kayıt silme sırası, tamamlama işleyicilerinde use-after-free durumuna yol açabilmektedir.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix driver deregistration order USB serial driver modules register one driver for the USB bus and one or more drivers for the ports on the USB serial bus. When unloading a driver module, the USB driver must be deregistered before the USB serial bus drivers so that I/O is stopped before unbinding the ports to avoid use-after-free in completion handlers accessing port data. Note that the "new_id" attributes must first be removed to prevent new ids from being added and triggering a probe of the USB driver after it has been deregistered.
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
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| 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-2026-98696 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-2026-98696 weaknesses.
Official Sources and Advisories
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