References to Advisories, Solutions, and Tools

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Change History

https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20

https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9

https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149

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

fbdev: Fix invalid page access after closing deferred I/O devices

When a fbdev with deferred I/O is once opened and closed, the dirty
pages still remain queued in the pageref list, and eventually later
those may be processed in the delayed work.  This may lead to a
corruption of pages, hitting an Oops.

This patch makes sure to cancel the delayed work and clean up the
pageref list at closing the device for addressing the bug. 

kernel.org https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20 [No types assigned]

kernel.org https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9 [No types assigned]

kernel.org https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149 [No types assigned]