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| author | Johan Hovold <johan@kernel.org> | 2021-09-06 15:45:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-14 10:18:18 +0300 |
| commit | 92dc0b1f46e12cfabd28d709bb34f7a39431b44f (patch) | |
| tree | 2394c04a918fd9ad43d0f8c10678735cfb83d9f6 /drivers/net/ethernet/i825xx/82596.c | |
| parent | 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f (diff) | |
| download | linux-92dc0b1f46e12cfabd28d709bb34f7a39431b44f.tar.xz | |
staging: greybus: uart: fix tty use after free
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 'drivers/net/ethernet/i825xx/82596.c')
0 files changed, 0 insertions, 0 deletions