diff options
| author | Johan Hovold <johan@kernel.org> | 2021-04-26 10:11:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-28 12:05:47 +0200 |
| commit | 5871761c5f0f20d6e98bf3b6bd7486d857589554 (patch) | |
| tree | a31283afa14155ef68177e5b3e40397c9ab73cd9 /scripts/dtc/libfdt/fdt_strerror.c | |
| parent | cb717a3160ff0c7af33cf06f8c524b70e8e50b44 (diff) | |
net: hso: fix NULL-deref on disconnect regression
commit 2ad5692db72874f02b9ad551d26345437ea4f7f3 upstream.
Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device
unregistration") fixed the racy minor allocation reported by syzbot, but
introduced an unconditional NULL-pointer dereference on every disconnect
instead.
Specifically, the serial device table must no longer be accessed after
the minor has been released by hso_serial_tty_unregister().
Fixes: 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration")
Cc: stable@vger.kernel.org
Cc: Anirudh Rayabharam <mail@anirudhrb.com>
Reported-by: Leonardo Antoniazzi <leoanto@aruba.it>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Anirudh Rayabharam <mail@anirudhrb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/dtc/libfdt/fdt_strerror.c')
0 files changed, 0 insertions, 0 deletions