Bug 2555157 (CVE-2026-98762) - CVE-2026-98762 kernel: kernel: Denial of Service via use-after-free in USB DWC2 driver
Summary: CVE-2026-98762 kernel: kernel: Denial of Service via use-after-free in USB DW...
Keywords:
Status: NEW
Alias: CVE-2026-98762
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:57 UTC by OSIDB Bzimport
Modified: 2026-10-21 01:15 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-10-18 15:57:39 UTC
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.


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