From: <gregkh@linuxfoundation.org>
To: alexander.h.duyck@intel.com, alexander.levin@microsoft.com,
andrewx.bowers@intel.com, gregkh@linuxfoundation.org,
jeffrey.t.kirsher@intel.com
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "i40e/i40evf: Fix use after free in Rx cleanup path" has been added to the 4.9-stable tree
Date: Sun, 18 Mar 2018 17:01:00 +0100 [thread overview]
Message-ID: <15213888604068@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
i40e/i40evf: Fix use after free in Rx cleanup path
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i40e-i40evf-fix-use-after-free-in-rx-cleanup-path.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Sun Mar 18 16:55:33 CET 2018
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Tue, 21 Feb 2017 15:55:41 -0800
Subject: i40e/i40evf: Fix use after free in Rx cleanup path
From: Alexander Duyck <alexander.h.duyck@intel.com>
[ Upstream commit 741b8b832a57402380be79d7d11a59eaf57fff3b ]
We need to reset skb back to NULL when we have freed it in the Rx cleanup
path. I found one spot where this wasn't occurring so this patch fixes it.
Change-ID: Iaca68934200732cd4a63eb0bd83b539c95f8c4dd
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/i40e/i40e_txrx.c | 1 +
drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 1 +
2 files changed, 2 insertions(+)
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -1820,6 +1820,7 @@ static int i40e_clean_rx_irq(struct i40e
*/
if (unlikely(i40e_test_staterr(rx_desc, BIT(I40E_RXD_QW1_ERROR_SHIFT)))) {
dev_kfree_skb_any(skb);
+ skb = NULL;
continue;
}
--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
@@ -1262,6 +1262,7 @@ static int i40e_clean_rx_irq(struct i40e
*/
if (unlikely(i40e_test_staterr(rx_desc, BIT(I40E_RXD_QW1_ERROR_SHIFT)))) {
dev_kfree_skb_any(skb);
+ skb = NULL;
continue;
}
Patches currently in stable-queue which might be from alexander.h.duyck@intel.com are
queue-4.9/i40e-i40evf-fix-use-after-free-in-rx-cleanup-path.patch
reply other threads:[~2018-03-18 16:02 UTC|newest]
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