4.16-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 e1a7418529e33bc4efc346324557251a16a3e79b ]
Currently the allocation of priv->oldaddr is not null checked which will lead to subsequent errors when accessing priv->oldaddr. Fix this with a null pointer check and a return of -ENOMEM on allocation failure.
Detected with Coccinelle: drivers/staging/rtl8192u/r8192U_core.c:1708:2-15: alloc with no test, possible model on line 1723
Fixes: 8fc8598e61f6 ("Staging: Added Realtek rtl8192u driver to staging") Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/rtl8192u/r8192U_core.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/staging/rtl8192u/r8192U_core.c +++ b/drivers/staging/rtl8192u/r8192U_core.c @@ -1706,6 +1706,8 @@ static short rtl8192_usb_initendpoints(s
priv->rx_urb[16] = usb_alloc_urb(0, GFP_KERNEL); priv->oldaddr = kmalloc(16, GFP_KERNEL); + if (!priv->oldaddr) + return -ENOMEM; oldaddr = priv->oldaddr; align = ((long)oldaddr) & 3; if (align) {