diff options
| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2022-02-28 10:43:31 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-01 22:42:32 +0100 |
| commit | fc7f750dc9d102c1ed7bbe4591f991e770c99033 (patch) | |
| tree | b78435c9ec5eba185ef09c9b42473d7751903bc1 /drivers/staging/gdm724x | |
| parent | Linux 5.17-rc6 (diff) | |
| download | linux-dev-fc7f750dc9d102c1ed7bbe4591f991e770c99033.tar.xz linux-dev-fc7f750dc9d102c1ed7bbe4591f991e770c99033.zip | |
staging: gdm724x: fix use after free in gdm_lte_rx()
The netif_rx_ni() function frees the skb so we can't dereference it to
save the skb->len.
Fixes: 61e121047645 ("staging: gdm7240: adding LTE USB driver")
Cc: stable <stable@vger.kernel.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20220228074331.GA13685@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/gdm724x')
| -rw-r--r-- | drivers/staging/gdm724x/gdm_lte.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/staging/gdm724x/gdm_lte.c b/drivers/staging/gdm724x/gdm_lte.c index 493ed4821515..0d8d8fed283d 100644 --- a/drivers/staging/gdm724x/gdm_lte.c +++ b/drivers/staging/gdm724x/gdm_lte.c @@ -76,14 +76,15 @@ static void tx_complete(void *arg) static int gdm_lte_rx(struct sk_buff *skb, struct nic *nic, int nic_type) { - int ret; + int ret, len; + len = skb->len + ETH_HLEN; ret = netif_rx_ni(skb); if (ret == NET_RX_DROP) { nic->stats.rx_dropped++; } else { nic->stats.rx_packets++; - nic->stats.rx_bytes += skb->len + ETH_HLEN; + nic->stats.rx_bytes += len; } return 0; |