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| author | Lukas Czerner <lczerner@redhat.com> | 2015-10-17 22:57:06 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 21:25:42 -0800 |
| commit | e107e557cfb85d0ea8c95eb198f1953598fb0407 (patch) | |
| tree | 62f66d096d54aa6a0e538650c08042d4c458c3bf /lib/atomic64_test.c | |
| parent | 89fa6cedf0ec477aa35af35f7f73bb206cea3595 (diff) | |
| download | linux-stable-e107e557cfb85d0ea8c95eb198f1953598fb0407.tar.gz linux-stable-e107e557cfb85d0ea8c95eb198f1953598fb0407.tar.bz2 linux-stable-e107e557cfb85d0ea8c95eb198f1953598fb0407.zip | |
ext4: fix potential use after free in __ext4_journal_stop
commit 6934da9238da947628be83635e365df41064b09b upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/atomic64_test.c')
0 files changed, 0 insertions, 0 deletions