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tty: amiserial: fix TIOCSSERIAL permission check
authorJohan Hovold <johan@kernel.org>
Wed, 7 Apr 2021 10:23:26 +0000 (12:23 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 7 Apr 2021 15:22:07 +0000 (17:22 +0200)
commit7cb195dbbb14e62e666d598f913d3edf20e87652
treeb0c9aab23fdd98313b2ae3f30627c9f2c053c135tree | snapshot
parentd8aaeef70296384e834254166fe0f16031686439commit | diff
tty: amiserial: fix TIOCSSERIAL permission check

Changing the port closing_wait parameter is a privileged operation.

Add the missing check to TIOCSSERIAL so that -EPERM is returned in case
an unprivileged user tries to change the closing-wait setting.

Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407102334.32361-9-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/amiserial.c diff | blob | history
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