Medium · published January 23, 2026
In the Linux kernel, the following vulnerability has been resolved:
net: mscc: ocelot: Fix crash when adding interface under a lag
Commit 15faa1f67ab4 ("lan966x: Fix crash when adding interface under a lag")
fixed a similar issue in the lan966x driver caused by a NULL pointer dereference.
The ocelot_set_aggr_pgids() function in the ocelot driver has similar logic
and is susceptible to the same crash.
This issue specifically affects the ocelot_vsc7514.c frontend, which leaves
unused ports as NULL pointers. The felix_vsc9959.c frontend is unaffected as
it uses the DSA framework which registers all ports.
Fix this by checking if the port pointer is valid before accessing it.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.12, < 5.15.198 | 5.15.198 |
| linux/linux_kernel | ≥ 5.16, < 6.1.161 | 6.1.161 |
| linux/linux_kernel | ≥ 6.2, < 6.6.121 | 6.6.121 |
| linux/linux_kernel | ≥ 6.7, < 6.12.66 | 6.12.66 |
| linux/linux_kernel | ≥ 6.13, < 6.18.6 | 6.18.6 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |