diff options
| author | Andrey Ryabinin <aryabinin@virtuozzo.com> | 2018-07-17 19:00:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-05 10:26:37 +0300 |
| commit | eaebcf902ae0260b9f9b5bacdc4530c164ca114f (patch) | |
| tree | 6ecb3f52da268675cc063d2cda827a46465abec8 /fs/efivarfs | |
| parent | c49505f6efb191287c3b3d8fa6e8eb43ec4b20df (diff) | |
| download | linux-eaebcf902ae0260b9f9b5bacdc4530c164ca114f.tar.xz | |
fuse: Don't access pipe->buffers without pipe_lock()
commit a2477b0e67c52f4364a47c3ad70902bc2a61bd4c upstream.
fuse_dev_splice_write() reads pipe->buffers to determine the size of
'bufs' array before taking the pipe_lock(). This is not safe as
another thread might change the 'pipe->buffers' between the allocation
and taking the pipe_lock(). So we end up with too small 'bufs' array.
Move the bufs allocations inside pipe_lock()/pipe_unlock() to fix this.
Fixes: dd3bb14f44a6 ("fuse: support splice() writing to fuse device")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: <stable@vger.kernel.org> # v2.6.35
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/efivarfs')
0 files changed, 0 insertions, 0 deletions