| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 037/109] staging: rtl8822be: fix missing null check on dev_alloc_skb return | Date | Fri, 16 Mar 2018 16:23:06 +0100 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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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))
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