From: "John W. Linville" <linville@tuxdriver.com>
To: linux-wireless@vger.kernel.org
Cc: Stanislaw Gruszka <sgruszka@redhat.com>,
"John W. Linville" <linville@tuxdriver.com>
Subject: [PATCH] mac80211: improve error checking if WEP fails to init
Date: Thu, 15 Jul 2010 16:16:17 -0400 [thread overview]
Message-ID: <1279224977-23100-1-git-send-email-linville@tuxdriver.com> (raw)
Do this by poisoning the values of wep_tx_tfm and wep_rx_tfm if either
crypto allocation fails.
Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
net/mac80211/wep.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index 6d133b6..9ebc8d8 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -32,13 +32,16 @@ int ieee80211_wep_init(struct ieee80211_local *local)
local->wep_tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
- if (IS_ERR(local->wep_tx_tfm))
+ if (IS_ERR(local->wep_tx_tfm)) {
+ local->wep_rx_tfm = ERR_PTR(-EINVAL);
return PTR_ERR(local->wep_tx_tfm);
+ }
local->wep_rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(local->wep_rx_tfm)) {
crypto_free_blkcipher(local->wep_tx_tfm);
+ local->wep_tx_tfm = ERR_PTR(-EINVAL);
return PTR_ERR(local->wep_rx_tfm);
}
--
1.7.1.1
reply other threads:[~2010-07-15 20:16 UTC|newest]
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