* [PATCH][next] rsi: fix missing null pointer check from a failed ieee80211_probereq_get call
@ 2019-02-21 12:35 Colin King
2019-02-28 8:29 ` Kalle Valo
0 siblings, 1 reply; 2+ messages in thread
From: Colin King @ 2019-02-21 12:35 UTC (permalink / raw)
To: Amitkumar Karwar, Siva Rebbagondla, Kalle Valo, David S . Miller,
linux-wireless, netdev
Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
The call to ieee80211_probereq_get can return NULL if a skb allocation
fails, so add a null pointer check and free an earlier skb on the error
exit return path.
Fixes: 7fdcb8e12660 ("rsi: add support for hardware scan offload")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/net/wireless/rsi/rsi_91x_mgmt.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
index 8c17842ac507..844f2fac298f 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
@@ -1726,6 +1726,10 @@ int rsi_send_bgscan_probe_req(struct rsi_common *common,
probereq_skb = ieee80211_probereq_get(common->priv->hw, vif->addr, ssid,
ssid_len, scan_req->ie_len);
+ if (!probereq_skb) {
+ dev_kfree_skb(skb);
+ return -ENOMEM;
+ }
memcpy(&skb->data[frame_len], probereq_skb->data, probereq_skb->len);
--
2.20.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH][next] rsi: fix missing null pointer check from a failed ieee80211_probereq_get call
2019-02-21 12:35 [PATCH][next] rsi: fix missing null pointer check from a failed ieee80211_probereq_get call Colin King
@ 2019-02-28 8:29 ` Kalle Valo
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Valo @ 2019-02-28 8:29 UTC (permalink / raw)
To: Colin King
Cc: Amitkumar Karwar, Siva Rebbagondla, David S . Miller,
linux-wireless, netdev, kernel-janitors, linux-kernel
Colin King <colin.king@canonical.com> wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The call to ieee80211_probereq_get can return NULL if a skb allocation
> fails, so add a null pointer check and free an earlier skb on the error
> exit return path.
>
> Fixes: 7fdcb8e12660 ("rsi: add support for hardware scan offload")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
Patch applied to wireless-drivers-next.git, thanks.
74ee436f9581 rsi: fix missing null pointer check from a failed ieee80211_probereq_get call
--
https://patchwork.kernel.org/patch/10824023/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 2+ messages in thread
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