linux-ext4 - [Bug 205609] Multiple bugs in __ext4_expand_extra

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Message-ID: <bug-205609-13602-tIugg5315m@https.bugzilla.kernel.org/>
Date:   Thu, 21 Nov 2019 00:47:15 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 205609] Multiple bugs in __ext4_expand_extra_isize (OOB write
 and UAF write)

https://bugzilla.kernel.org/show_bug.cgi?id=205609

Theodore Tso (tytso@....edu) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tytso@....edu

--- Comment #5 from Theodore Tso (tytso@....edu) ---
Are you running syzkaller yourself? (e.g., this is different from the syzbot
runs)?   If this is something that you find in the 

The Syzbot run by Dmitry at Google has reported a number of these sorts of
issues which I believe is fixed by:

https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?h=dev&id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a

So it might be helpful if you could run your syzkaller against the dev branch
of the ext4.git tree.

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