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net: usb: pegasus: fix improper read if get_registers() fail

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commit 224c04973d upstream.

get_registers() may fail with -ENOMEM and in this
case we can read a garbage from the status variable tmp.

Reported-by: syzbot+3499a83b2d062ae409d4@syzkaller.appspotmail.com
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Denis Kirjanov 2019-07-30 15:13:57 +02:00 • committed by Greg Kroah-Hartman
commit 07d92caeb9
1 changed files with 1 additions and 1 deletions
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2
drivers/net/usb/pegasus.c
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@ -285,7 +285,7 @@ static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
{
int i;
__u8 tmp;
__u8 tmp = 0;
__le16 retdatai;
int ret;