Samuel Thibault b0d4fa10bf speakup: Reject setting the speakup line discipline outside of speakup ... commit f0992098ca upstream. Speakup exposing a line discipline allows userland to try to use it, while it is deemed to be useless, and thus uselessly exposes potential bugs. One of them is simply that in such a case if the line sends data, spk_ttyio_receive_buf2 is called and crashes since spk_ttyio_synth is NULL. This change restricts the use of the speakup line discipline to speakup drivers, thus avoiding such kind of issues altogether. Cc: stable@vger.kernel.org Reported-by: Shisong Qin <qinshisong1205@gmail.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Tested-by: Shisong Qin <qinshisong1205@gmail.com> Link: https://lore.kernel.org/r/20201129193523.hm3f6n5xrn6fiyyc@function Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-11 13:23:31 +01:00
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DefaultKeyAssignments	…
Kconfig	…
Makefile	…
TODO	…
buffers.c	…
devsynth.c	…
fakekey.c	…
i18n.c	…
i18n.h	…
keyhelp.c	…
kobjects.c	…
main.c	staging/speakup: fix get_word non-space look-ahead	2020-03-25 08:25:55 +01:00
selection.c	vt: selection, push console lock down	2020-03-12 13:00:21 +01:00
serialio.c	…
serialio.h	…
speakup.h	…
speakup_acnt.h	…
speakup_acntpc.c	…
speakup_acntsa.c	…
speakup_apollo.c	…
speakup_audptr.c	…
speakup_bns.c	…
speakup_decext.c	…
speakup_decpc.c	…
speakup_dectlk.c	…
speakup_dtlk.c	…
speakup_dtlk.h	…
speakup_dummy.c	…
speakup_keypc.c	…
speakup_ltlk.c	…
speakup_soft.c	…
speakup_spkout.c	…
speakup_txprt.c	…
speakupmap.h	…
speakupmap.map	…
spk_priv.h	…
spk_priv_keyinfo.h	…
spk_ttyio.c	speakup: Reject setting the speakup line discipline outside of speakup	2020-12-11 13:23:31 +01:00
spk_types.h	…
spkguide.txt	…
synth.c	…
sysfs-driver-speakup	…
thread.c	…
varhandlers.c	…