Kernel: hisi_femac Netops NULL Deref Crash (CONFIG_NET_SHAPER)
CVE-2026-99200 Published on October 28, 2026
net: hisilicon: hisi_femac: Move setting of netops to fix crash
In the Linux kernel, the following vulnerability has been resolved:
net: hisilicon: hisi_femac: Move setting of netops to fix crash
hisi_femac_drv_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.
phy_link_topo_add_phy from phy_attach_direct+0xec/0x37c
of_phy_get_and_connect from hisi_femac_drv_probe+0x1f4/0x558
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Assign netdev_ops before the PHY attach, as was done for emac in commit
7c9f391ec89c ("net: emac: move setting of netops to fix crash").
Products Associated with CVE-2026-99200
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Affected Versions
Linux:- Version ded86da4bbb78cad74cecc368fee3ae3a296e2ca and below 06ef5b084b150c538bc84148e5d710eee012413c is affected.
- Version ded86da4bbb78cad74cecc368fee3ae3a296e2ca and below 444889dfa27b54b39026e962464b1f8f9093e1ea is affected.
- Version 7.2 is affected.
- Before 7.2 is unaffected.
- Version 7.2.13, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.