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Re: [PATCH v2 1/1] xfs: Fix issues found while fuzzing the XFS filesyste
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From: |
Daniel Kiper |
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Subject: |
Re: [PATCH v2 1/1] xfs: Fix issues found while fuzzing the XFS filesystem |
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Date: |
Tue, 6 Jun 2023 16:23:43 +0200 |
On Fri, Jun 02, 2023 at 06:08:44PM +0000, Lidong Chen wrote:
> From: Darren Kenny <darren.kenny@oracle.com>
>
> While performing fuzz testing with XFS filesystem images with ASAN
> enabled, several issues were found where the memory accesses are made
> beyond the data that is allocated into the struct grub_xfs_data
> structure's data field.
>
> The existing stucture didn't store the size of the memory allocated into
> the buffer in the data field and had no way to check it. To resolve
> these issues, the data size is stored to enable checks into the data
> buffer.
>
> With these checks in place, the fuzzing corpus no longer cause any
> crashes.
>
> Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
> Signed-off-by: Robbie Harwood <rharwood@redhat.com>
> Signed-off-by: Marta Lewandowska <mlewando@redhat.com>
> Signed-off-by: Lidong Chen <lidong.chen@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Daniel