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CVE-2026-99197

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Last modified

CVE-2026-99197 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: net: mv643xx: move setting of netops to fix crash mv643xx_eth_probe() connects the PHY before dev->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")..

Description

In the Linux kernel, the following vulnerability has been resolved: net: mv643xx: move setting of netops to fix crash mv643xx_eth_probe() connects the PHY before dev->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").

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ded86da4bbb78cad74cecc368fee3ae3a296e2ca, < bfb1ca89e9f6efa26c8a4a5b9de46541a222abc9; >= ded86da4bbb78cad74cecc368fee3ae3a296e2ca, < a3eef3d2cca032d8768b5eb07aab0f46b79bfd8a
LinuxLinux7.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-99197?
In the Linux kernel, the following vulnerability has been resolved: net: mv643xx: move setting of netops to fix crash mv643xx_eth_probe() connects the PHY before dev->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").
How severe is CVE-2026-99197?
Severity scoring for CVE-2026-99197 is pending analysis.
How do I fix CVE-2026-99197?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST