Unverified Commit 8498e656 authored Aug 03, 2024 by openeuler-ci-bot Committed by Gitee Aug 03, 2024

!10612 wifi: cfg80211: wext: add extra SIOCSIWSCAN data check

Merge Pull Request from: @ci-robot 
 
PR sync from: Liu Jian <liujian56@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/TDMIEP6T644AFFPUYEY7DEH2V4XVP6SV/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAGELZ 
 
Link:https://gitee.com/openeuler/kernel/pulls/10612

 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>

parents 13856a4a 0878a163

net/wireless/scan.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -2772,10 +2772,14 @@ int cfg80211_wext_siwscan(struct net_device *dev,
		wiphy = &rdev->wiphy;

		/* Determine number of channels, needed to allocate creq */
		if (wreq && wreq->num_channels)
		if (wreq && wreq->num_channels) {
		/* Passed from userspace so should be checked */
		if (unlikely(wreq->num_channels > IW_MAX_FREQUENCIES))
		return -EINVAL;
		n_channels = wreq->num_channels;
		else
		} else {
		n_channels = ieee80211_get_num_supported_channels(wiphy);
		}

		creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
		n_channels * sizeof(void *),