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authorArnaldo Carvalho de Melo <acme@mandriva.com>2006-11-21 01:26:49 -0200
committerJeff Garzik <jeff@garzik.org>2006-12-02 00:12:05 -0500
commit571d6eee9b5bce28fcbeb7588890ad5ca3f8c718 (patch)
tree38ad5d544dc9c14fc49a03957c24ee7a2e450b60 /net/ieee80211/softmac
parent8e87295b9578fa46b5f325a7dc42ddbbdad6e0d0 (diff)
downloadlinux-571d6eee9b5bce28fcbeb7588890ad5ca3f8c718.tar.bz2
[PATCH] Check ieee80211softmac_auth_resp kmalloc result
And use kmemdup and kzalloc where applicable Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/ieee80211/softmac')
-rw-r--r--net/ieee80211/softmac/ieee80211softmac_auth.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c
index 95e5287e12bb..0612015f1c78 100644
--- a/net/ieee80211/softmac/ieee80211softmac_auth.c
+++ b/net/ieee80211/softmac/ieee80211softmac_auth.c
@@ -216,10 +216,16 @@ ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth)
net->challenge_len = *data++;
if (net->challenge_len > WLAN_AUTH_CHALLENGE_LEN)
net->challenge_len = WLAN_AUTH_CHALLENGE_LEN;
- if (net->challenge != NULL)
- kfree(net->challenge);
- net->challenge = kmalloc(net->challenge_len, GFP_ATOMIC);
- memcpy(net->challenge, data, net->challenge_len);
+ kfree(net->challenge);
+ net->challenge = kmemdup(data, net->challenge_len,
+ GFP_ATOMIC);
+ if (net->challenge == NULL) {
+ printkl(KERN_NOTICE PFX "Shared Key "
+ "Authentication failed due to "
+ "memory shortage.\n");
+ spin_unlock_irqrestore(&mac->lock, flags);
+ break;
+ }
aq->state = IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE;
/* We reuse the work struct from the auth request here.