---
id: "CVE-2026-99199"
kind: "vulnerability"
aliases: ["CVE-2026-99199"]
title: "Linux kernel: hip04 Ethernet driver crashes at probe with shaper enabled"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["arm", "hisilicon-hardware", "infrastructure", "linux-kernel"]
not_affected_if: ["config-net-shaper-disabled", "no-hip04-hardware"]
published_at: "2026-10-28T11:17:41+00:00"
first_seen_at: "2026-10-28T11:32:37+00:00"
updated_at: "2026-10-28T11:34:03+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99199", "first_seen_at": "2026-10-28T11:32:37+00:00"}]
---

# Linux kernel: hip04 Ethernet driver crashes at probe with shaper enabled

In the Linux kernel's hip04_eth network driver for HiSilicon hardware, the probe path attaches the PHY before setting netdev_ops, so a NULL pointer dereference occurs when CONFIG_NET_SHAPER is enabled. The sources describe a crash during driver probe, not code execution or data theft.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- Apply the upstream kernel fix that assigns netdev_ops before of_phy_connect() in hip04_mac_probe(), matching the emac fix in commit 7c9f391ec89c.
- Check that the running kernel includes that commit.

## Timeline

- 2026-10-28T11:32:37+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-99199

## From the sources

In the Linux kernel, the following vulnerability has been resolved:

net: hisilicon: hip04_eth: Move setting of netops to fix crash

hip04_mac_probe() calls of_phy_connect() before ndev->netdev_ops is
assigned. phy_attach_direct() -> phy_link_topo_add_phy() reads
dev->netdev_ops through netdev_need_ops_lock() since the commit in
question, so probing crashes with a NULL pointer dereference when
CONFIG_NET_SHAPER is enabled.

Assign netdev_ops before the PHY attach, as was done for emac in commit
7c9f391ec89c ("net: emac: move setting of netops to fix crash").

---

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