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Date:   Mon, 25 Nov 2019 10:09:07 +0000
Subject: [Bug 205609] Multiple bugs in __ext4_expand_extra_isize (OOB write
 and UAF write)

--- Comment #6 from Tristan ( ---
Dear  Theodore,

- Looks like syzkaller bot have found the UAF too. 

- The OOB write's path is different to be triggered (check the stack trace) but
the root cause seems to be similar at the end

- I am running syzkaller by myself 

- I will work on the dev branch of the ext4.git tree as suggested

- At this time, I think the commit "ext4: add more paranoia checking in
ext4_expand_extra_isize handling" should have fixed both issues but I can


Kind regards,


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