CVE-2026-98762 PUBLISHED

USB: dwc2: shut down wakeup timer before freeing HCD state

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 7359d482eb4d3967cc8be354405ae6be6eaf732c to 441be312fce927443eae2821f502344d953c38bb (excl.)
  • affected from 7359d482eb4d3967cc8be354405ae6be6eaf732c to 4333174ea52c863a50bb3e0a4726bf9f7cdf7524 (excl.)
  • affected from 7359d482eb4d3967cc8be354405ae6be6eaf732c to 79ba37dd38a321cb32a79332a3e3c68dd334dca9 (excl.)
  • affected from 7359d482eb4d3967cc8be354405ae6be6eaf732c to fd772af9512cdecb83de34a461801533828e77fd (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 3.10 is affected
  • unaffected from 0 to 3.10 (excl.)
  • unaffected from 6.12.113 to 6.12.* (incl.)
  • unaffected from 6.18.56 to 6.18.* (incl.)
  • unaffected from 7.2.10 to 7.2.* (incl.)
  • unaffected from 7.3-rc6 to * (incl.)

References