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* [PATCH AUTOSEL 4.14 001/105] wil6210: fix potential out-of-bounds read
@ 2019-07-15 13:38 Sasha Levin
  2019-07-15 13:38 ` [PATCH AUTOSEL 4.14 002/105] ath10k: Do not send probe response template for mesh Sasha Levin
  0 siblings, 1 reply; 3+ messages in thread
From: Sasha Levin @ 2019-07-15 13:38 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Gustavo A. R. Silva, Maya Erez, Kalle Valo, Sasha Levin,
	linux-wireless, wil6210, netdev

From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>

[ Upstream commit bfabdd6997323adbedccb13a3fed1967fb8cf8f5 ]

Notice that *rc* can evaluate to up to 5, include/linux/netdevice.h:

enum gro_result {
        GRO_MERGED,
        GRO_MERGED_FREE,
        GRO_HELD,
        GRO_NORMAL,
        GRO_DROP,
        GRO_CONSUMED,
};
typedef enum gro_result gro_result_t;

In case *rc* evaluates to 5, we end up having an out-of-bounds read
at drivers/net/wireless/ath/wil6210/txrx.c:821:

	wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n",
		     len, gro_res_str[rc]);

Fix this by adding element "GRO_CONSUMED" to array gro_res_str.

Addresses-Coverity-ID: 1444666 ("Out-of-bounds read")
Fixes: 194b482b5055 ("wil6210: Debug print GRO Rx result")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/wil6210/txrx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c
index 389c718cd257..16750056b8b5 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -732,6 +732,7 @@ void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev)
 		[GRO_HELD]		= "GRO_HELD",
 		[GRO_NORMAL]		= "GRO_NORMAL",
 		[GRO_DROP]		= "GRO_DROP",
+		[GRO_CONSUMED]		= "GRO_CONSUMED",
 	};
 
 	if (ndev->features & NETIF_F_RXHASH)
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH AUTOSEL 4.14 001/105] wil6210: fix potential out-of-bounds read
@ 2019-07-15 14:26 Sasha Levin
  2019-07-15 14:26 ` [PATCH AUTOSEL 4.14 002/105] ath10k: Do not send probe response template for mesh Sasha Levin
  0 siblings, 1 reply; 3+ messages in thread
From: Sasha Levin @ 2019-07-15 14:26 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Gustavo A. R. Silva, Maya Erez, Kalle Valo, Sasha Levin,
	linux-wireless, wil6210, netdev

From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>

[ Upstream commit bfabdd6997323adbedccb13a3fed1967fb8cf8f5 ]

Notice that *rc* can evaluate to up to 5, include/linux/netdevice.h:

enum gro_result {
        GRO_MERGED,
        GRO_MERGED_FREE,
        GRO_HELD,
        GRO_NORMAL,
        GRO_DROP,
        GRO_CONSUMED,
};
typedef enum gro_result gro_result_t;

In case *rc* evaluates to 5, we end up having an out-of-bounds read
at drivers/net/wireless/ath/wil6210/txrx.c:821:

	wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n",
		     len, gro_res_str[rc]);

Fix this by adding element "GRO_CONSUMED" to array gro_res_str.

Addresses-Coverity-ID: 1444666 ("Out-of-bounds read")
Fixes: 194b482b5055 ("wil6210: Debug print GRO Rx result")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/wil6210/txrx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c
index 389c718cd257..16750056b8b5 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -732,6 +732,7 @@ void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev)
 		[GRO_HELD]		= "GRO_HELD",
 		[GRO_NORMAL]		= "GRO_NORMAL",
 		[GRO_DROP]		= "GRO_DROP",
+		[GRO_CONSUMED]		= "GRO_CONSUMED",
 	};
 
 	if (ndev->features & NETIF_F_RXHASH)
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2019-07-15 14:54 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2019-07-15 13:38 [PATCH AUTOSEL 4.14 001/105] wil6210: fix potential out-of-bounds read Sasha Levin
2019-07-15 13:38 ` [PATCH AUTOSEL 4.14 002/105] ath10k: Do not send probe response template for mesh Sasha Levin
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2019-07-15 14:26 [PATCH AUTOSEL 4.14 001/105] wil6210: fix potential out-of-bounds read Sasha Levin
2019-07-15 14:26 ` [PATCH AUTOSEL 4.14 002/105] ath10k: Do not send probe response template for mesh Sasha Levin

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