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qcacld-3.0: Fix out of bound access to a buffer

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Copy the country code value to local variable and use
it to set the country code to avoid the out of bound
access to caller buffer.

Change-Id: I48662d4034f5dab496b23af4c1840581061bd2e5
CRs-Fixed: 2247610
This commit is contained in:
Kiran Kumar Lokere 2018-06-04 16:54:53 -07:00 • committed by nshrivas
commit 410317af7e
1 changed files with 4 additions and 2 deletions
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6
core/hdd/src/wlan_hdd_regulatory.c
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@ -900,6 +900,7 @@ void hdd_reg_notifier(struct wiphy *wiphy,
{
QDF_STATUS status = QDF_STATUS_SUCCESS;
struct hdd_context *hdd_ctx = wiphy_priv(wiphy);
char country[REG_ALPHA2_LEN + 1] = {0};
hdd_debug("country: %c%c, initiator %d, dfs_region: %d",
request->alpha2[0],
@ -909,8 +910,9 @@ void hdd_reg_notifier(struct wiphy *wiphy,
switch (request->initiator) {
case NL80211_REGDOM_SET_BY_USER:
status = ucfg_reg_set_country(hdd_ctx->hdd_pdev,
request->alpha2);
qdf_mem_copy(country, request->alpha2, QDF_MIN(
sizeof(request->alpha2), sizeof(country)));
status = ucfg_reg_set_country(hdd_ctx->hdd_pdev, country);
break;
case NL80211_REGDOM_SET_BY_CORE:
case NL80211_REGDOM_SET_BY_COUNTRY_IE: