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Date:      Sun, 26 Apr 2015 11:07:14 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 199705] [patch] [geom] use-after-free bug in geli
Message-ID:  <bug-199705-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199705

            Bug ID: 199705
           Summary: [patch] [geom] use-after-free bug in geli
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: patch
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: luke.tw@gmail.com
          Keywords: patch

Created attachment 156004
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=156004&action=edit
patch for geli

In g_eli_auth_run() and g_eli_crypto_run(), crypto_dispatch() sends crypto
request. 
After the last child bio is served, the bp is freed in g_vfs_done(). 
Then in g_eli_auth_run() and g_eli_crypto_run(), there are uses of the freed bp 

if (bp->bio_error == 0)
          bp->bio_error = error;

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