Linux kernel mv643xx driver NULL ptr deref crash with CONFIG_NET_SHAPER
CVE-2026-99197 Published on October 28, 2026
net: mv643xx: move setting of netops to fix crash
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").
Products Associated with CVE-2026-99197
Want to know whenever a new CVE is published for Linux Kernel? stack.watch will email you.
Affected Versions
Linux:- Version ded86da4bbb78cad74cecc368fee3ae3a296e2ca and below bfb1ca89e9f6efa26c8a4a5b9de46541a222abc9 is affected.
- Version ded86da4bbb78cad74cecc368fee3ae3a296e2ca and below a3eef3d2cca032d8768b5eb07aab0f46b79bfd8a 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.