USB: dwc2: shut down wakeup timer before freeing HCD state
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EPSS probability
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Risk score
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Published
9 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
%63
Short explanation
A vulnerability has been addressed in the Linux kernel regarding the dwc2 USB driver wakeup timer state. The dwc2_wakeup_detected() function accesses the DWC2 host state and can rearm the wakeup timer.
Improper synchronization of timer callbacks during state deallocation can lead to stability and resource management issues.
What should be done?
- Follow the vendor advisory for patch status
- Apply the appropriate kernel updates
Chain of evidence and sources
dwc2_wakeup_detected() fonksiyonu DWC2 host durumuna erişir ve uyandırma zamanlayıcısını yeniden kurabilir.
Zamanlayıcı dwc2_hcd_release() içerisinde, HCD kaynakları serbest bırakılmadan önce durdurulmalıdır.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: USB: dwc2: shut down wakeup timer before freeing HCD state dwc2_wakeup_detected() accesses the DWC2 host state and can rearm the wakeup timer. dwc2_hcd_free() currently deletes the timer only after freeing host-owned state, and timer_delete() does not synchronize a callback or prevent it from being queued again. Stop and shut down the timer in dwc2_hcd_release(), before the HCD resources are freed. This covers both the HCD initialization error path and normal HCD removal.
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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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-2026-98762 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-2026-98762 weaknesses.
Official Sources and Advisories
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