Patch "bnxt_en: Fix the 'Invalid VF' id check in bnxt_vf_ndo_prep routine." has been added to the 4.14-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    bnxt_en: Fix the 'Invalid VF' id check in bnxt_vf_ndo_prep routine.

to the 4.14-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:
     bnxt_en-fix-the-invalid-vf-id-check-in-bnxt_vf_ndo_prep-routine.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From foo@baz Wed Feb 28 16:23:28 CET 2018
From: Venkat Duvvuru <venkatkumar.duvvuru@xxxxxxxxxxxx>
Date: Thu, 4 Jan 2018 18:46:55 -0500
Subject: bnxt_en: Fix the 'Invalid VF' id check in bnxt_vf_ndo_prep routine.

From: Venkat Duvvuru <venkatkumar.duvvuru@xxxxxxxxxxxx>


[ Upstream commit 78f300049335ae81a5cc6b4b232481dc5e1f9d41 ]

In bnxt_vf_ndo_prep (which is called by bnxt_get_vf_config ndo), there is a
check for "Invalid VF id". Currently, the check is done against max_vfs.
However, the user doesn't always create max_vfs. So, the check should be
against the created number of VFs. The number of bnxt_vf_info structures
that are allocated in bnxt_alloc_vf_resources routine is the "number of
requested VFs". So, if an "invalid VF id" falls between the requested
number of VFs and the max_vfs, the driver will be dereferencing an invalid
pointer.

Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Venkat Devvuru <venkatkumar.duvvuru@xxxxxxxxxxxx>
Signed-off-by: Michael Chan <michael.chan@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -70,7 +70,7 @@ static int bnxt_vf_ndo_prep(struct bnxt
 		netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
 		return -EINVAL;
 	}
-	if (vf_id >= bp->pf.max_vfs) {
+	if (vf_id >= bp->pf.active_vfs) {
 		netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
 		return -EINVAL;
 	}


Patches currently in stable-queue which might be from venkatkumar.duvvuru@xxxxxxxxxxxx are

queue-4.14/bnxt_en-fix-population-of-flow_type-in-bnxt_hwrm_cfa_flow_alloc.patch
queue-4.14/bnxt_en-fix-the-invalid-vf-id-check-in-bnxt_vf_ndo_prep-routine.patch



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]