dpdk/0001-vhost-fix-virtqueue-use-after-free-on-NUMA-reallocat.patch
Timothy Redaelli 66901848bd Rebase to 21.11.2
Includes fixes for CVE-2022-2132 (#2107173) and CVE-2022-28199 (#2123616)

Resolves: #2126159
Resolves: #2107173
Resolves: #2123616
2022-09-27 10:30:00 +02:00

35 lines
1.2 KiB
Diff

From 8010a15523e896ca2f2436432602210cab793f87 Mon Sep 17 00:00:00 2001
From: David Marchand <david.marchand@redhat.com>
Date: Mon, 25 Jul 2022 22:32:03 +0200
Subject: [PATCH] vhost: fix virtqueue use after free on NUMA reallocation
[ upstream commit 0b2a2ca35037d6a5168f0832c11d9858b8ae946a ]
translate_ring_addresses (via numa_realloc) may change a virtio device and
virtio queue.
The virtqueue object must be refreshed before accessing the lock.
Fixes: 04c27cb673b9 ("vhost: fix unsafe vring addresses modifications")
Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
lib/vhost/vhost_user.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
index df780fd7d6..2b45e35d4a 100644
--- a/lib/vhost/vhost_user.c
+++ b/lib/vhost/vhost_user.c
@@ -2575,6 +2575,7 @@ vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg,
if (is_vring_iotlb(dev, vq, imsg)) {
rte_spinlock_lock(&vq->access_lock);
*pdev = dev = translate_ring_addresses(dev, i);
+ vq = dev->virtqueue[i];
rte_spinlock_unlock(&vq->access_lock);
}
}
--
2.37.3