Andrea Parri (Microsoft) 71a6979d54 Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind() ... [ Upstream commit e3fa4b747f085d2cda09bba0533b86fa76038635 ] When channel->device_obj is non-NULL, vmbus_onoffer_rescind() could invoke put_device(), that will eventually release the device and free the channel object (cf. vmbus_device_release()). However, a pointer to the object is dereferenced again later to load the primary_channel. The use-after-free can be avoided by noticing that this load/check is redundant if device_obj is non-NULL: primary_channel must be NULL if device_obj is non-NULL, cf. vmbus_add_channel_work(). Fixes: 54a66265d6 ("Drivers: hv: vmbus: Fix rescind handling") Reported-by: Juan Vazquez <juvazq@microsoft.com> Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20201209070827.29335-5-parri.andrea@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-03-04 11:37:46 +01:00
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channel_mgmt.c	Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind()	2021-03-04 11:37:46 +01:00
channel.c	Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header	2020-09-28 08:55:13 +00:00
connection.c	Drivers: hv: vmbus: Replace the per-CPU channel lists with a global array of channels	2020-04-23 13:17:11 +00:00
hv_balloon.c	hyperv-fixes for 5.10-rc3	2020-11-05 11:32:03 -08:00
hv_debugfs.c	hv_debugfs: Make hv_debug_root static	2020-04-04 17:47:43 +01:00
hv_fcopy.c	hv_utils: Always execute the fcopy and vss callbacks in a tasklet	2020-04-23 13:17:11 +00:00
hv_kvp.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
hv_snapshot.c	hv_utils: Always execute the fcopy and vss callbacks in a tasklet	2020-04-23 13:17:11 +00:00
hv_trace_balloon.h	hv_balloon: trace post_status	2018-03-06 09:57:17 -08:00
hv_trace.c	hv: add SPDX license to trace	2018-03-28 13:24:56 +02:00
hv_trace.h	hyperv-next for 5.8	2020-06-03 15:00:05 -07:00
hv_util.c	hyperv-next for 5.10	2020-10-14 10:32:10 -07:00
hv_utils_transport.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280	2019-06-05 17:36:36 +02:00
hv_utils_transport.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280	2019-06-05 17:36:36 +02:00
hv.c	hyperv-fixes for 5.10-rc5	2020-11-16 15:02:33 -08:00
hyperv_vmbus.h	Drivers: hv: vmbus: Resolve more races involving init_vp_index()	2020-05-23 09:07:00 +00:00
Kconfig	clocksource/drivers/hyperv: Enable TSC page clocksource on 32bit	2019-08-23 16:59:54 +02:00
Makefile	drivers: hv: vmbus: Introduce latency testing	2019-11-21 20:10:44 -05:00
ring_buffer.c	drivers: hv: vmbus: Introduce latency testing	2019-11-21 20:10:44 -05:00
vmbus_drv.c	x86/hyperv: Fix kexec panic/hang issues	2021-01-27 11:54:57 +01:00