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brcmfmac: fix missing checks for kmemdup 

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: Kangjie Lu <kjlu@umn.edu>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Kangjie Lu 2019-03-15 12:04:32 -05:00 committed by Kalle Valo
parent a9fd0953fa
commit 46953f9722
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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@ -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;