What’s Vulnerable › Vulnerabilities

CVE-2026-98762: USB: dwc2: shut down wakeup timer before freeing HCD state

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-30

Description

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.

Affected products

• Linux: 3.10 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0b2ea59d66d046d5601ffc3e61dd09d3597c704e
• https://git.kernel.org/stable/c/4333174ea52c863a50bb3e0a4726bf9f7cdf7524
• https://git.kernel.org/stable/c/441be312fce927443eae2821f502344d953c38bb
• https://git.kernel.org/stable/c/79ba37dd38a321cb32a79332a3e3c68dd334dca9
• https://git.kernel.org/stable/c/82cc242da6d621752718929e6a2fa6f9554ebffe
• https://git.kernel.org/stable/c/f3d76baa5b902f681100447e9d185819c5c1316d
• https://git.kernel.org/stable/c/fd772af9512cdecb83de34a461801533828e77fd

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