diff options
| author | Johan Hovold <johan@kernel.org> | 2021-09-06 14:45:38 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-06 15:31:11 +0200 |
| commit | a5cfd51f6348e8fd7531461366946039c29c7e69 (patch) | |
| tree | d6a7493e56d179c9e9b5174884e9d283bc92f9ae /include/uapi/linux/byteorder | |
| parent | 0c30a2b7c144dee1a2a6f33073a2266039304968 (diff) | |
staging: greybus: uart: fix tty use after free
commit 92dc0b1f46e12cfabd28d709bb34f7a39431b44f upstream.
User space can hold a tty open indefinitely and tty drivers must not
release the underlying structures until the last user is gone.
Switch to using the tty-port reference counter to manage the life time
of the greybus tty state to avoid use after free after a disconnect.
Fixes: a18e15175708 ("greybus: more uart work")
Cc: stable@vger.kernel.org # 4.9
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210906124538.22358-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/byteorder')
0 files changed, 0 insertions, 0 deletions