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wl12xx: Validate FEM index from ini file and FW 

Check for out of bound FEM index to prevent reading beyond ini
memory end.

Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Cc: stable@kernel.org
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Pontus Fuchs 2011-10-18 09:23:41 +02:00 committed by Luciano Coelho
parent e4da3fbfbd
commit 2131d3c2f9
1 changed files with 22 additions and 0 deletions
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22
drivers/net/wireless/wl12xx/cmd.c
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@ -121,6 +121,11 @@ int wl1271_cmd_general_parms(struct wl1271 *wl)
if (!wl->nvs)
return -ENODEV;
if (gp->tx_bip_fem_manufacturer >= WL1271_INI_FEM_MODULE_COUNT) {
wl1271_warning("FEM index from INI out of bounds");
return -EINVAL;
}
gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
if (!gen_parms)
return -ENOMEM;
@ -144,6 +149,12 @@ int wl1271_cmd_general_parms(struct wl1271 *wl)
gp->tx_bip_fem_manufacturer =
gen_parms->general_params.tx_bip_fem_manufacturer;
if (gp->tx_bip_fem_manufacturer >= WL1271_INI_FEM_MODULE_COUNT) {
wl1271_warning("FEM index from FW out of bounds");
ret = -EINVAL;
goto out;
}
wl1271_debug(DEBUG_CMD, "FEM autodetect: %s, manufacturer: %d\n",
answer ? "auto" : "manual", gp->tx_bip_fem_manufacturer);
@ -163,6 +174,11 @@ int wl128x_cmd_general_parms(struct wl1271 *wl)
if (!wl->nvs)
return -ENODEV;
if (gp->tx_bip_fem_manufacturer >= WL1271_INI_FEM_MODULE_COUNT) {
wl1271_warning("FEM index from ini out of bounds");
return -EINVAL;
}
gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
if (!gen_parms)
return -ENOMEM;
@ -187,6 +203,12 @@ int wl128x_cmd_general_parms(struct wl1271 *wl)
gp->tx_bip_fem_manufacturer =
gen_parms->general_params.tx_bip_fem_manufacturer;
if (gp->tx_bip_fem_manufacturer >= WL1271_INI_FEM_MODULE_COUNT) {
wl1271_warning("FEM index from FW out of bounds");
ret = -EINVAL;
goto out;
}
wl1271_debug(DEBUG_CMD, "FEM autodetect: %s, manufacturer: %d\n",
answer ? "auto" : "manual", gp->tx_bip_fem_manufacturer);