Discussion on v1 of this patch fizzled out in April without it being applied: https://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@xxxxxxxxx/#r This is a vulnerability, we can't just ignore it. Paolo Abeni asked me to explore whether the issue can be fixed in USB Ethernet drivers instead of core networking code. I've done that and presented a patch, but consider it an inferior approach. I'm explaining why in the updated commit message of this patch and I'm rebasing it on net-next. Otherwise it's the same as v1, I still believe that this is the best solution to the problem. Thanks! Lukas Wunner (1): net: linkwatch: ignore events for unregistered netdevs net/core/dev.c | 17 ----------------- net/core/dev.h | 1 - net/core/link_watch.c | 10 ++-------- 3 files changed, 2 insertions(+), 26 deletions(-) -- 2.35.2
