Is CVE-2026-99199 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-99199 being exploited in the wild.

How severe is CVE-2026-99199?

Informational severity, published 28 October 2026.

Which products and versions are affected?

Linux kernel affected versions when CONFIG_NET_SHAPER is enabled.

Is there a fix for CVE-2026-99199?

A patch was published on 2026-10-15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-99199 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-99199?

Check whether you run Linux kernel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-99199: Linux kernel hip04_eth null pointer dereference during probe

CVE-2026-99199 · Severity: info · Published 2026-10-28

The Hisilicon HIP04 Ethernet driver in the Linux kernel crashes during device initialization when CONFIG_NET_SHAPER is enabled. The driver fails to initialize network operations before attempting to attach a physical layer device, causing a null pointer exception that prevents the network interface from being brought online, effectively rendering the network port non-functional.

Technologies: Linux kernel.

Quick answers

Is CVE-2026-99199 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-99199 being exploited in the wild.
How severe is CVE-2026-99199?: Informational severity, published 28 October 2026.
Which products and versions are affected?: Linux kernel affected versions when CONFIG_NET_SHAPER is enabled.
Is there a fix for CVE-2026-99199?: A patch was published on 2026-10-15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-99199 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-99199?: Check whether you run Linux kernel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The hip04_mac_probe() function calls of_phy_connect() before assigning ndev->netdev_ops, but phy_attach_direct() now reads netdev_ops through netdev_need_ops_lock() (since a related networking change), resulting in a null pointer dereference when CONFIG_NET_SHAPER is enabled. The fix reorders the initialization to assign netdev_ops before the PHY attachment, ensuring the operation structure is available when accessed.

Affected products

Linux kernel affected versions when CONFIG_NET_SHAPER is enabled

Timeline

2026-10-28: disclosed
2026-10-15: patched

References

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