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| author | Theodore Ts'o <tytso@mit.edu> | 2018-08-27 01:47:09 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2018-08-27 01:47:09 -0400 |
| commit | b50282f3241acee880514212d88b6049fb5039c8 (patch) | |
| tree | b848cc5a2dce967053f7e1c63ee782e619100b07 /fs/ext4/dir.c | |
| parent | 072ebb3bffe67d71d1f1e52add799f4491eab691 (diff) | |
ext4: check to make sure the rename(2)'s destination is not freed
If the destination of the rename(2) system call exists, the inode's
link count (i_nlinks) must be non-zero. If it is, the inode can end
up on the orphan list prematurely, leading to all sorts of hilarity,
including a use-after-free.
https://bugzilla.kernel.org/show_bug.cgi?id=200931
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Wen Xu <wen.xu@gatech.edu>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ext4/dir.c')
0 files changed, 0 insertions, 0 deletions