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| author | Lukas Czerner <lczerner@redhat.com> | 2015-10-18 05:57:06 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-10-18 05:57:06 +0300 |
| commit | 6934da9238da947628be83635e365df41064b09b (patch) | |
| tree | a7d5770b2fbd3961c40b6bb2da86873dcfab19c0 /fs/ext4/resize.c | |
| parent | 33d14975e5ac469963d5d63856b61698ad0bff07 (diff) | |
| download | linux-6934da9238da947628be83635e365df41064b09b.tar.xz | |
ext4: fix potential use after free in __ext4_journal_stop
There is a use-after-free possibility in __ext4_journal_stop() in the
case that we free the handle in the first jbd2_journal_stop() because
we're referencing handle->h_err afterwards. This was introduced in
9705acd63b125dee8b15c705216d7186daea4625 and it is wrong. Fix it by
storing the handle->h_err value beforehand and avoid referencing
potentially freed handle.
Fixes: 9705acd63b125dee8b15c705216d7186daea4625
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ext4/resize.c')
0 files changed, 0 insertions, 0 deletions