diff options
| author | John W. Linville <linville@tuxdriver.com> | 2010-07-15 16:16:17 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-07-16 14:03:42 -0400 |
| commit | 088c87262bbc39a01ebcd70817d35616785908b1 (patch) | |
| tree | 3ebb99b80645eaffa2ad04c9f11708f6694d24a1 | |
| parent | 48d5548fc5e5ad79ca98a287b67f403834929739 (diff) | |
mac80211: improve error checking if WEP fails to initmaster-2010-07-16
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>
| -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 6d133b6efce..9ebc8d8a1f5 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); } |