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Drivers: hv: vmbus: Use after free in __vmbus_open()

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[ Upstream commit 3e9bf43f7f ]

The "open_info" variable is added to the &vmbus_connection.chn_msg_list,
but the error handling frees "open_info" without removing it from the
list.  This will result in a use after free.  First remove it from the
list, and then free it.

Fixes: 6f3d791f30 ("Drivers: hv: vmbus: Fix rescind handling issues")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/YHV3XLCot6xBS44r@mwanda
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter
2021-04-13 13:50:04 +03:00
committed by Greg Kroah-Hartman
parent b49bdd70b3
commit d5c7b42c9f
1 changed files with 1 additions and 1 deletions
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2
drivers/hv/channel.c
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@@ -583,7 +583,7 @@ static int __vmbus_open(struct vmbus_channel *newchannel,
if (newchannel->rescind) {
err = -ENODEV;
goto error_free_info;
goto error_clean_msglist;
}
err = vmbus_post_msg(open_msg,