lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Wed, 13 Apr 2022 11:30:12 +0000
To:     Lin Ma <>
Subject: Re: [PATCH] NFC: NULL out the dev->rfkill to prevent UAF


This patch was applied to netdev/net-next.git (master)
by David S. Miller <>:

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

You are awesome, thank you!
Deet-doot-dot, I am a bot.

Powered by blists - more mailing lists