diff options
| author | Scott Bauer <sbauer@plzdonthack.me> | 2016-07-27 19:11:29 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-10 12:54:50 +0200 |
| commit | 04678f5598322beecf6f06ddf73b2eb6a8b0ef9a (patch) | |
| tree | 820fc7e27b1bd392aab25da2c3db459ae5db5bfe /fs/inode.c | |
| parent | 900ac92c5514dd8c63a8f3c91942dcb4cc6bd0f3 (diff) | |
vfs: ioctl: prevent double-fetch in dedupe ioctl
commit 10eec60ce79187686e052092e5383c99b4420a20 upstream.
This prevents a double-fetch from user space that can lead to to an
undersized allocation and heap overflow.
Fixes: 54dbc1517237 ("vfs: hoist the btrfs deduplication ioctl to the vfs")
Signed-off-by: Scott Bauer <sbauer@plzdonthack.me>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/inode.c')
0 files changed, 0 insertions, 0 deletions