Messages in this thread | | | Subject | Re: [PATCH] NFC: NULL out the dev->rfkill to prevent UAF | From | patchwork-bot+netdevbpf@kernel ... | Date | Wed, 13 Apr 2022 11:30:12 +0000 |
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Hello:
This patch was applied to netdev/net-next.git (master) by David S. Miller <davem@davemloft.net>:
On Tue, 12 Apr 2022 13:32:08 +0800 you wrote: > Commit 3e3b5dfcd16a ("NFC: reorder the logic in nfc_{un,}register_device") > assumes the device_is_registered() in function nfc_dev_up() will help > to check when the rfkill is unregistered. However, this check only > take effect when device_del(&dev->dev) is done in nfc_unregister_device(). > Hence, the rfkill object is still possible be dereferenced. > > The crash trace in latest kernel (5.18-rc2): > > [...]
Here is the summary with links: - NFC: NULL out the dev->rfkill to prevent UAF https://git.kernel.org/netdev/net-next/c/1b0e81416a24
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