| Message ID | 1558710917-4555-2-git-send-email-ruxandra.radulescu@nxp.com |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
| Series | dpaa2-eth: Fix smatch warnings | expand |
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c index 76bd8d2..7b182f4 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c @@ -4,6 +4,7 @@ */ #include <linux/net_tstamp.h> +#include <linux/nospec.h> #include "dpni.h" /* DPNI_LINK_OPT_* */ #include "dpaa2-eth.h" @@ -648,6 +649,8 @@ static int dpaa2_eth_get_rxnfc(struct net_device *net_dev, case ETHTOOL_GRXCLSRULE: if (rxnfc->fs.location >= max_rules) return -EINVAL; + rxnfc->fs.location = array_index_nospec(rxnfc->fs.location, + max_rules); if (!priv->cls_rules[rxnfc->fs.location].in_use) return -EINVAL; rxnfc->fs = priv->cls_rules[rxnfc->fs.location].fs;
Smatch reports a potential spectre vulnerability in the dpaa2-eth driver, where the value of rxnfc->fs.location (which is provided from user-space) is used as index in an array. Add a call to array_index_nospec() to sanitize the access. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> --- drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 3 +++ 1 file changed, 3 insertions(+)