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From: Stephen Hemminger <stephen@networkplumber.org>
To: ajit.khaparde@broadcom.com, somnath.kotur@broadcom.com
Cc: dev@dpdk.org, Stephen Hemminger <stephen@networkplumber.org>,
	Christopher Ertl <Christopher.Ertl@microsoft.com>
Subject: [dpdk-dev] [PATCH 3/6] net/bnxt: avoid potential out of bounds read
Date: Tue,  3 Mar 2020 09:59:35 -0800
Message-ID: <20200303175938.14292-4-stephen@networkplumber.org> (raw)
In-Reply-To: <20200303175938.14292-1-stephen@networkplumber.org>

If hardware returned a bogus number of vnic's  from the
query it could cause an out of bounds read into vnic table.

Reported-by: Christopher Ertl <Christopher.Ertl@microsoft.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/bnxt/bnxt_hwrm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 20e2f6a36713..ad8bdb1c2913 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -4029,6 +4029,12 @@ static int bnxt_hwrm_func_vf_vnic_query(struct bnxt *bp, uint16_t vf,
 
 	HWRM_UNLOCK();
 
+	if (rc > bp->pf.total_vnics) {
+		PMD_DRV_LOG(ERR,
+			    "Vnic id %d is out of range\n", rc);
+		return -EINVAL;
+	}
+
 	return rc;
 }
 
-- 
2.20.1


  parent reply	other threads:[~2020-03-03 18:00 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-03 17:59 [dpdk-dev] [PATCH 0/6] net/bnxt: bounds checking patches Stephen Hemminger
2020-03-03 17:59 ` [dpdk-dev] [PATCH 1/6] eal: add portable way to check for math overflow Stephen Hemminger
2020-03-03 22:28   ` Dmitry Kozlyuk
2020-03-03 17:59 ` [dpdk-dev] [PATCH 2/6] net/bnxt: fix potential data race Stephen Hemminger
2020-03-03 18:13   ` [dpdk-dev] [EXTERNAL] " Christopher Ertl
2020-03-03 18:16     ` Stephen Hemminger
2020-03-03 17:59 ` Stephen Hemminger [this message]
2020-03-03 17:59 ` [dpdk-dev] [PATCH 4/6] net/bnxt: check for integer overflow in buffer sizing Stephen Hemminger
2020-03-03 17:59 ` [dpdk-dev] [PATCH 5/6] net/bnxt: add integer underflow check Stephen Hemminger
2020-03-03 17:59 ` [dpdk-dev] [PATCH 6/6] net/bnxt: sanitize max_l2_ctx Stephen Hemminger
2020-03-31 11:47 ` [dpdk-dev] [PATCH 0/6] net/bnxt: bounds checking patches Ferruh Yigit
2020-03-31 17:52   ` Ajit Khaparde
2020-03-31 18:04     ` Stephen Hemminger
2020-10-19 22:28       ` Thomas Monjalon

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