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If the device node of dvb_ca_en50221 is open() and the device is disconnected, a UAF may occur when calling close() on the device node. The root cause is that wake_up() and wait_event() for dvbdev->wait_queue are not implemented. So implement wait_event() function in dvb_ca_en50221_release() and add 'remove_mutex' which prevents race condition for 'ca->exit'. [mchehab: fix a checkpatch warning] Link: https://lore.kernel.org/linux-media/20221121063308.GA33821@ubuntu Signed-off-by: Hyunwoo Kim <v4bel@theori.io> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> |
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| .. | ||
| dmxdev.c | ||
| dvb_ca_en50221.c | ||
| dvb_demux.c | ||
| dvb_frontend.c | ||
| dvb_math.c | ||
| dvb_net.c | ||
| dvb_ringbuffer.c | ||
| dvb_vb2.c | ||
| dvbdev.c | ||
| Kconfig | ||
| Makefile | ||