diff options
| author | Eric Biggers <ebiggers@google.com> | 2023-01-22 23:04:14 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-11 16:31:49 +0100 |
| commit | a6807ef0f3b3d8508d3b07a2e35de8a91820a014 (patch) | |
| tree | a18e2012f2e05a3ebac7f954bbd6fcf74bcbc01a /include/uapi/linux | |
| parent | e226f1fdcee1ca6e68233b132718deb578a84e38 (diff) | |
f2fs: fix information leak in f2fs_move_inline_dirents()
commit 9a5571cff4ffcfc24847df9fd545cc5799ac0ee5 upstream.
When converting an inline directory to a regular one, f2fs is leaking
uninitialized memory to disk because it doesn't initialize the entire
directory block. Fix this by zero-initializing the block.
This bug was introduced by commit 4ec17d688d74 ("f2fs: avoid unneeded
initializing when converting inline dentry"), which didn't consider the
security implications of leaking uninitialized memory to disk.
This was found by running xfstest generic/435 on a KMSAN-enabled kernel.
Fixes: 4ec17d688d74 ("f2fs: avoid unneeded initializing when converting inline dentry")
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux')
0 files changed, 0 insertions, 0 deletions