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Change History

In the Linux kernel, the following vulnerability has been resolved:

reset: gpio: suppress bind attributes in sysfs

This is a special device that's created dynamically and is supposed to
stay in memory forever. We also currently don't have a devlink between
it and the actual reset consumer. Suppress sysfs bind attributes so that
user-space can't unbind the device because - as of now - it will cause a
use-after-free splat from any user that puts the reset control handle.

https://git.kernel.org/stable/c/09d6efc6abd42809956d598906c222ccd1c8ae92

https://git.kernel.org/stable/c/16de4c6a8fe9ff497ca1aba33ef0dbee09f11952

https://git.kernel.org/stable/c/1d7d869f074f98c34fe23f6a56e5f3acc1f95a2b

https://git.kernel.org/stable/c/76801c3dfca0ac6339a23e9615b5f23e25b8644c