diff options
| author | John W. Linville <linville@tuxdriver.com> | 2010-07-15 22:16:17 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-07-16 20:03:42 +0200 |
| commit | 088c87262bbc39a01ebcd70817d35616785908b1 (patch) | |
| tree | 3ebb99b80645eaffa2ad04c9f11708f6694d24a1 /net/mac80211/wep.c | |
| parent | orinoco_usb: potential null dereference (diff) | |
| download | linux-088c87262bbc39a01ebcd70817d35616785908b1.tar.xz linux-088c87262bbc39a01ebcd70817d35616785908b1.zip | |
mac80211: improve error checking if WEP fails to init
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>
Diffstat (limited to 'net/mac80211/wep.c')
| -rw-r--r-- | 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 6d133b6efce5..9ebc8d8a1f5b 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); } |