Patch "staging: rtl8822be: fix missing null check on dev_alloc_skb return" has been added to the 4.15-stable tree

Patch "staging: rtl8822be: fix missing null check on dev_alloc_skb return" has been added to the 4.15-stable tree

[gregkh]

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

    staging: rtl8822be: fix missing null check on dev_alloc_skb return

to the 4.15-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:
     staging-rtl8822be-fix-missing-null-check-on-dev_alloc_skb-return.patch
and it can be found in the queue-4.15 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 Fri Mar 16 15:11:07 CET 2018
From: Colin Ian King <colin.king@canonical.com>
Date: Fri, 17 Nov 2017 14:50:55 +0000
Subject: staging: rtl8822be: fix missing null check on dev_alloc_skb return

From: Colin Ian King <colin.king@canonical.com>


[ Upstream commit 3eb23426e1749a0483bc4c9b18e51f657569e3ed ]

dev_alloc_skb can potentially return NULL, so add a null check to
avoid a null pointer dereference on skb

Detected by CoverityScan, CID#1454558 ("Dereference on null return")

Fixes: 7e5b796cde7e ("staging: r8822be: Add the driver code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/rtlwifi/rtl8822be/fw.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/staging/rtlwifi/rtl8822be/fw.c
+++ b/drivers/staging/rtlwifi/rtl8822be/fw.c
@@ -464,6 +464,8 @@ bool rtl8822b_halmac_cb_write_data_rsvd_
 	int count;
 
 	skb = dev_alloc_skb(size);
+	if (!skb)
+		return false;
 	memcpy((u8 *)skb_put(skb, size), buf, size);
 
 	if (!_rtl8822be_send_bcn_or_cmd_packet(rtlpriv->hw, skb, BEACON_QUEUE))


Patches currently in stable-queue which might be from colin.king@canonical.com are

queue-4.15/usbip-vudc-fix-null-pointer-dereference-on-udc-lock.patch
queue-4.15/crypto-cavium-fix-memory-leak-on-info.patch
queue-4.15/staging-rtl8822be-fix-missing-null-check-on-dev_alloc_skb-return.patch