Is CVE-2026-99193 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-99193 being exploited in the wild.

How severe is CVE-2026-99193?

Informational severity, published 28 October 2026.

Which products and versions are affected?

Linux kernel Versions with CONFIG_NET_SHAPER enabled, following commit ded86da4bbb7.

Is there a fix for CVE-2026-99193?

Yes: fixed in Included in stable kernel trees via commits 955bb7cf680d8699ce94c73539af882840a9be43 and e7694aab7ad002480ed9d534bd8d6bc28b798d8a. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-99193 attacked?

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

Am I affected by CVE-2026-99193?

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-2026-99193: Linux kernel icssm-prueth NULL pointer dereference in netdev initialization

CVE-2026-99193 · Severity: info · Published 2026-10-28

A driver for Texas Instruments Ethernet controllers crashes during initialization when a certain kernel configuration is enabled. The crash occurs because network operations are assigned after attempting to connect to a PHY device, causing a NULL pointer access. This prevents the network interface from loading, resulting in loss of network connectivity.

Technologies: Linux kernel.

Quick answers

Is CVE-2026-99193 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-99193 being exploited in the wild.
How severe is CVE-2026-99193?: Informational severity, published 28 October 2026.
Which products and versions are affected?: Linux kernel Versions with CONFIG_NET_SHAPER enabled, following commit ded86da4bbb7.
Is there a fix for CVE-2026-99193?: Yes: fixed in Included in stable kernel trees via commits 955bb7cf680d8699ce94c73539af882840a9be43 and e7694aab7ad002480ed9d534bd8d6bc28b798d8a. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-99193 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-99193?: 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.

How to fix

Fixed in: Included in stable kernel trees via commits 955bb7cf680d8699ce94c73539af882840a9be43 and e7694aab7ad002480ed9d534bd8d6bc28b798d8a

Technical details

A NULL pointer dereference occurs in icssm_prueth_netdev_init() when CONFIG_NET_SHAPER is enabled. The function calls of_phy_get_and_connect() before assigning ndev->netdev_ops, but the PHY attachment code path (phy_attach_direct() → phy_link_topo_add_phy()) now reads dev->netdev_ops via netdev_need_ops_lock(), triggering the crash. The fix reorders the assignment of netdev_ops to occur before PHY attachment.

Affected products

Linux kernel Versions with CONFIG_NET_SHAPER enabled, following commit ded86da4bbb7

Timeline

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

References

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