brcmfmac: fix missing checks for kmemdup (46953f97) · Commits · 戴 / test

In case kmemdup fails, the fix sets conn_info->req_ie_len and conn_info->resp_ie_len to zero to avoid buffer overflows. Signed-off-by:

drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -5464,6 +5464,8 @@ static s32 brcmf_get_assoc_ies(struct brcmf_cfg80211_info *cfg,
		conn_info->req_ie =
		kmemdup(cfg->extra_buf, conn_info->req_ie_len,
		GFP_KERNEL);
		if (!conn_info->req_ie)
		conn_info->req_ie_len = 0;
		} else {
		conn_info->req_ie_len = 0;
		conn_info->req_ie = NULL;
		@@ -5480,6 +5482,8 @@ static s32 brcmf_get_assoc_ies(struct brcmf_cfg80211_info *cfg,
		conn_info->resp_ie =
		kmemdup(cfg->extra_buf, conn_info->resp_ie_len,
		GFP_KERNEL);
		if (!conn_info->resp_ie)
		conn_info->resp_ie_len = 0;
		} else {
		conn_info->resp_ie_len = 0;
		conn_info->resp_ie = NULL;