Andrea Parri (Microsoft) 624d18332e Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind() ... [ Upstream commit e3fa4b747f ] 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 10:26:24 +01:00
..
channel.c	Drivers: hv: vmbus: Fix virt_to_hvpfn() for X86_PAE	2019-08-20 12:49:57 -04:00
channel_mgmt.c	Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind()	2021-03-04 10:26:24 +01:00
connection.c	Drivers: hv: vmbus: Always handle the VMBus messages on CPU0	2020-06-22 09:31:00 +02:00
hv.c	Drivers: hv: vmbus: Allow cleanup of VMBUS_CONNECT_CPU if disconnected	2020-11-24 13:29:23 +01:00
hv_balloon.c	hv_balloon: disable warning when floor reached	2020-11-18 19:20:17 +01:00
hv_fcopy.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280	2019-06-05 17:36:36 +02:00
hv_kvp.c	Merge 4.20-rc4 into char-misc-next	2018-11-26 07:50:56 +01:00
hv_snapshot.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280	2019-06-05 17:36:36 +02:00
hv_trace.c
hv_trace.h	tools: hv: Use the correct style for SPDX License Identifier	2019-08-17 15:29:34 -04:00
hv_trace_balloon.h
hv_util.c	clocksource/drivers: Continue making Hyper-V clocksource ISA agnostic	2019-07-03 11:00:59 +02:00
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
hyperv_vmbus.h	Drivers: hv: vmbus: Always handle the VMBus messages on CPU0	2020-06-22 09:31:00 +02:00
Kconfig	clocksource/drivers/hyperv: Enable TSC page clocksource on 32bit	2019-08-23 16:59:54 +02:00
Makefile
ring_buffer.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320	2019-06-05 17:37:05 +02:00
vmbus_drv.c	Drivers: hv: vmbus: hibernation: do not hang forever in vmbus_bus_resume()	2020-09-23 12:40:40 +02:00