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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Vincent Whitchurch <vincent.whitchurch@axis.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	Stefano Garzarella <sgarzare@redhat.com>,
	Sasha Levin <sashal@kernel.org>,
	virtualization@lists.linux-foundation.org
Subject: [PATCH AUTOSEL 5.13 08/26] virtio_vdpa: reject invalid vq indices
Date: Mon, 23 Aug 2021 20:53:38 -0400	[thread overview]
Message-ID: <20210824005356.630888-8-sashal@kernel.org> (raw)
In-Reply-To: <20210824005356.630888-1-sashal@kernel.org>

From: Vincent Whitchurch <vincent.whitchurch@axis.com>

[ Upstream commit cb5d2c1f6cc0e5769099a7d44b9d08cf58cae206 ]

Do not call vDPA drivers' callbacks with vq indicies larger than what
the drivers indicate that they support.  vDPA drivers do not bounds
check the indices.

Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20210701114652.21956-1-vincent.whitchurch@axis.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/virtio/virtio_vdpa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index e28acf482e0c..e9b9dd03f44a 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -149,6 +149,9 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index,
 	if (!name)
 		return NULL;
 
+	if (index >= vdpa->nvqs)
+		return ERR_PTR(-ENOENT);
+
 	/* Queue shouldn't already be set up. */
 	if (ops->get_vq_ready(vdpa, index))
 		return ERR_PTR(-ENOENT);
-- 
2.30.2


  parent reply	other threads:[~2021-08-24  0:54 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-24  0:53 [PATCH AUTOSEL 5.13 01/26] iwlwifi: pnvm: accept multiple HW-type TLVs Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 02/26] iwlwifi: add new SoF with JF devices Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 03/26] iwlwifi: add new so-jf devices Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 04/26] opp: remove WARN when no valid OPPs remain Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 05/26] cpufreq: blocklist Qualcomm sm8150 in cpufreq-dt-platdev Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 06/26] virtio: Improve vq->broken access to avoid any compiler optimization Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 07/26] virtio_pci: Support surprise removal of virtio pci device Sasha Levin
2021-08-24  0:53 ` Sasha Levin [this message]
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 09/26] vringh: Use wiov->used to check for read/write desc order Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 10/26] tools/virtio: fix build Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 11/26] platform/x86: asus-nb-wmi: Allow configuring SW_TABLET_MODE method with a module option Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 12/26] platform/x86: asus-nb-wmi: Add tablet_mode_sw=lid-flip quirk for the TP200s Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 13/26] qed: qed ll2 race condition fixes Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 14/26] qed: Fix null-pointer dereference in qed_rdma_create_qp() Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 15/26] Revert "drm/amd/pm: fix workload mismatch on vega10" Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 16/26] drm/amd/pm: change the workload type for some cards Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 17/26] blk-mq: don't grab rq's refcount in blk_mq_check_expired() Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 18/26] drm: Copy drm_wait_vblank to user before returning Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 19/26] platform/x86: gigabyte-wmi: add support for X570 GAMING X Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 20/26] drm/nouveau: recognise GA107 Sasha Levin
2021-08-24 17:08   ` Lyude Paul
2021-08-30 12:17     ` Sasha Levin
2021-08-30 17:08       ` Lyude Paul
2021-08-30 17:09         ` Lyude Paul
2021-08-30 21:55           ` Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 21/26] drm/nouveau/disp: power down unused DP links during init Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 22/26] drm/nouveau/kms/nv50: workaround EFI GOP window channel format differences Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 23/26] drm/nouveau: block a bunch of classes from userspace Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 24/26] platform/x86: gigabyte-wmi: add support for B450M S2H V2 Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 25/26] net/rds: dma_map_sg is entitled to merge entries Sasha Levin
2021-08-24  0:53 ` [PATCH AUTOSEL 5.13 26/26] arm64: initialize all of CNTHCTL_EL2 Sasha Levin

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