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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-05-27 13:34:35 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-31 21:52:59 +0300 |
| commit | f2633d2eaaab773ea8b29cea3785cf0f8a8872a5 (patch) | |
| tree | 7e7a7e03f72c394181ba4feb1ad4752fc78ecef9 /drivers/atm | |
| parent | 86f04396ff6d36146ec335d429191a7c8e2209af (diff) | |
| download | linux-f2633d2eaaab773ea8b29cea3785cf0f8a8872a5.tar.xz | |
atm: iphase: off by one in rx_pkt()
The iadev->rx_open[] array holds "iadev->num_vc" pointers (this code
assumes that pointers are 32 bits). So the > here should be >= or else
we could end up reading a garbage pointer from one element beyond the
end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm')
| -rw-r--r-- | drivers/atm/iphase.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c index 7d00f2994738..809dd1e02091 100644 --- a/drivers/atm/iphase.c +++ b/drivers/atm/iphase.c @@ -1128,7 +1128,7 @@ static int rx_pkt(struct atm_dev *dev) /* make the ptr point to the corresponding buffer desc entry */ buf_desc_ptr += desc; if (!desc || (desc > iadev->num_rx_desc) || - ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) { + ((buf_desc_ptr->vc_index & 0xffff) >= iadev->num_vc)) { free_desc(dev, desc); IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);) return -1; |