You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
3.6 KiB
104 lines
3.6 KiB
From c13b4e32be9de900e7a55ebf5c341df8363e3b4a Mon Sep 17 00:00:00 2001
|
|
From: Jon Maloy <jmaloy@redhat.com>
|
|
Date: Tue, 15 Aug 2023 00:08:55 +0000
|
|
Subject: [PATCH 4/4] io: remove io watch if TLS channel is closed during
|
|
handshake
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
RH-Author: Jon Maloy <jmaloy@redhat.com>
|
|
RH-MergeRequest: 301: io: remove io watch if TLS channel is closed during handshake
|
|
RH-Bugzilla: 2216503
|
|
RH-Acked-by: Peter Xu <peterx@redhat.com>
|
|
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
RH-Commit: [1/1] 10bc3055a369a89996a1be34ce8d6c1fbc2c531e (redhat/rhel/src/qemu-kvm/jons-qemu-kvm-2)
|
|
|
|
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2216503
|
|
CVE: CVE-2023-3354
|
|
Upstream: Merged
|
|
|
|
commit 10be627d2b5ec2d6b3dce045144aa739eef678b4
|
|
Author: Daniel P. Berrangé <berrange@redhat.com>
|
|
Date: Tue Jun 20 09:45:34 2023 +0100
|
|
|
|
io: remove io watch if TLS channel is closed during handshake
|
|
|
|
The TLS handshake make take some time to complete, during which time an
|
|
I/O watch might be registered with the main loop. If the owner of the
|
|
I/O channel invokes qio_channel_close() while the handshake is waiting
|
|
to continue the I/O watch must be removed. Failing to remove it will
|
|
later trigger the completion callback which the owner is not expecting
|
|
to receive. In the case of the VNC server, this results in a SEGV as
|
|
vnc_disconnect_start() tries to shutdown a client connection that is
|
|
already gone / NULL.
|
|
|
|
CVE-2023-3354
|
|
Reported-by: jiangyegen <jiangyegen@huawei.com>
|
|
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
|
|
|
|
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
|
|
---
|
|
include/io/channel-tls.h | 1 +
|
|
io/channel-tls.c | 18 ++++++++++++------
|
|
2 files changed, 13 insertions(+), 6 deletions(-)
|
|
|
|
diff --git a/include/io/channel-tls.h b/include/io/channel-tls.h
|
|
index 5672479e9e..26c67f17e2 100644
|
|
--- a/include/io/channel-tls.h
|
|
+++ b/include/io/channel-tls.h
|
|
@@ -48,6 +48,7 @@ struct QIOChannelTLS {
|
|
QIOChannel *master;
|
|
QCryptoTLSSession *session;
|
|
QIOChannelShutdown shutdown;
|
|
+ guint hs_ioc_tag;
|
|
};
|
|
|
|
/**
|
|
diff --git a/io/channel-tls.c b/io/channel-tls.c
|
|
index c730cb8ec5..bd79e78837 100644
|
|
--- a/io/channel-tls.c
|
|
+++ b/io/channel-tls.c
|
|
@@ -195,12 +195,13 @@ static void qio_channel_tls_handshake_task(QIOChannelTLS *ioc,
|
|
}
|
|
|
|
trace_qio_channel_tls_handshake_pending(ioc, status);
|
|
- qio_channel_add_watch_full(ioc->master,
|
|
- condition,
|
|
- qio_channel_tls_handshake_io,
|
|
- data,
|
|
- NULL,
|
|
- context);
|
|
+ ioc->hs_ioc_tag =
|
|
+ qio_channel_add_watch_full(ioc->master,
|
|
+ condition,
|
|
+ qio_channel_tls_handshake_io,
|
|
+ data,
|
|
+ NULL,
|
|
+ context);
|
|
}
|
|
}
|
|
|
|
@@ -215,6 +216,7 @@ static gboolean qio_channel_tls_handshake_io(QIOChannel *ioc,
|
|
QIOChannelTLS *tioc = QIO_CHANNEL_TLS(
|
|
qio_task_get_source(task));
|
|
|
|
+ tioc->hs_ioc_tag = 0;
|
|
g_free(data);
|
|
qio_channel_tls_handshake_task(tioc, task, context);
|
|
|
|
@@ -375,6 +377,10 @@ static int qio_channel_tls_close(QIOChannel *ioc,
|
|
{
|
|
QIOChannelTLS *tioc = QIO_CHANNEL_TLS(ioc);
|
|
|
|
+ if (tioc->hs_ioc_tag) {
|
|
+ g_clear_handle_id(&tioc->hs_ioc_tag, g_source_remove);
|
|
+ }
|
|
+
|
|
return qio_channel_close(tioc->master, errp);
|
|
}
|
|
|
|
--
|
|
2.39.3
|
|
|