Messages in this thread | | | Subject | Re: [PATCH v1] hamradio: remove needs_free_netdev to avoid UAF | From | patchwork-bot+netdevbpf@kernel ... | Date | Sat, 13 Nov 2021 04:20:09 +0000 |
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Hello:
This patch was applied to netdev/net.git (master) by Jakub Kicinski <kuba@kernel.org>:
On Thu, 11 Nov 2021 22:14:02 +0800 you wrote: > The former patch "defer 6pack kfree after unregister_netdev" reorders > the kfree of two buffer after the unregister_netdev to prevent the race > condition. It also adds free_netdev() function in sixpack_close(), which > is a direct copy from the similar code in mkiss_close(). > > However, in sixpack driver, the flag needs_free_netdev is set to true in > sp_setup(), hence the unregister_netdev() will free the netdev > automatically. Therefore, as the sp is netdev_priv, use-after-free > occurs. > > [...]
Here is the summary with links: - [v1] hamradio: remove needs_free_netdev to avoid UAF https://git.kernel.org/netdev/net/c/81b1d548d00b
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